Jazmine Corona
August 1, 2025
This guide is general information and not medical advice, so follow your clinic's instructions first. Read the full medical disclaimer.
If your stomach feels tight, full and about two sizes bigger than it did last week, you haven't done anything wrong. Bloating after egg retrieval is the thing egg donors bring up with us most often in the days after a cycle, and it's also one of the most normal parts of recovery. Here's why it happens, how long it lasts, what helps, and the few signs that mean it's time to call your clinic.
Which symptoms are normal, and which mean you should call your clinic?
Feeling bloated, crampy and generally uncomfortable for several days after your retrieval is expected, and most of it fades on its own. The symptoms to keep an eye on are the ones that get worse as the days go by instead of slowly easing.
| Symptom | Normal and expected | Call your clinic today |
|---|---|---|
| Bloating | A tight, full abdomen that slowly improves | Bloating that keeps getting worse instead of better |
| Weight | A pound or two of fluid weight | Weight gain of more than 3 pounds in 2 days |
| Pain | Mild cramping and gas | Severe or sudden abdominal pain |
| Nausea | Some nausea in the first day or two | Vomiting that will not stop, or an inability to keep fluids down |
| Urination | Your usual amount | Urinating much less than usual, or dark urine |
| Bleeding | Spotting for a day or two | Heavy bleeding |
| Energy and appetite | Low energy and a small appetite | Feeling faint or dizzy |
| Temperature | No fever | Fever over 101 degrees Fahrenheit |
| Breathing and chest | No changes | Shortness of breath, chest pain, or pain at the tip of your shoulder |
| Legs | No changes | Pain, swelling, or redness in one calf, which can be a sign of a blood clot |
If you're worried that something you're feeling falls outside the normal range, call your clinic instead of waiting it out. Your care team would much rather hear from you early, and nobody there will think you're overreacting. The UK's Human Fertilisation and Embryology Authority makes the same point, reminding patients they should never feel like they're wasting the clinic's time.1
A quick phone call can put your mind at ease, and if it does turn out to be OHSS, it is much easier to manage when your clinic can start monitoring you before it progresses.
Why do I feel bloated after egg retrieval?
Bloating after egg retrieval comes mostly from your ovaries, which stay enlarged for a week or two after stimulation, along with gas from a digestive system slowed down by anesthesia. For most people the worst of it lasts two to three days, eases steadily over the following week and clears up once the next period starts.
Call your clinic right away if you gain more than three pounds in two days, can't keep fluids down, are urinating much less than usual or have trouble breathing.
What happens to your ovaries during stimulation?
In a natural cycle only one follicle matures, and your ovary stays about the size of an almond. During a stimulation cycle a dozen or more follicles grow together, so each ovary can swell to several times its normal size, and because hormone levels stay high for several days after the egg retrieval procedure, that swelling doesn't go down right away. In some people, especially after a strong response, the medications also make the blood vessels around the ovaries leak fluid into the abdomen, which Cleveland Clinic describes as the cause of OHSS.2
On top of that, anesthesia slows your digestion for a day or two, so gas and constipation tend to show up right when you already feel full. If you're curious about the retrieval itself, our article “Is Donating Eggs Painful?” walks through each step, and our guide to the side effects of egg donation covers everything else you might notice.
Is it fluid, gas, or actual weight gain?
It's mostly fluid and gas. A few extra pounds in the first week is ordinary, and they come off as your ovaries shrink back to their usual size. None of it sticks around, either: a 2023 study that weighed women across 519 IVF cycles found their weight changed by less than 1 percent from the start of treatment to the day of their pregnancy test.9 What to watch is how fast the scale moves: a slow pound or two is expected, but more than three pounds in two days is the point at which the American Society for Reproductive Medicine and most clinics want you to call.3
Tip: weigh yourself at the same time each morning so you can follow the trend across the week instead of worrying over a single number.
Why does the bloating feel so high up?
When your abdomen is crowded with swollen ovaries and fluid, it pushes up against your stomach, which is why you can feel full after only a few bites. That's usually normal in the first few days. Pain at the tip of your shoulder is different, because it can mean fluid has collected high enough to irritate your diaphragm, so call your clinic about that or any shortness of breath.
How long does bloating last after egg retrieval?
Most people feel noticeably better within two to three days and close to normal within one to two weeks. If the bloating hangs on past that, it very often clears up when your next period arrives, since that's when hormone levels drop and your ovaries go back to their baseline size. ASRM notes that mild symptoms generally resolve within about two weeks, and the Royal College of Obstetricians and Gynaecologists describes seven to ten days as the usual course for milder cases.34
| When | What most people feel | What helps most |
|---|---|---|
| Retrieval day | Grogginess from anesthesia, cramping, gas, a tight and full abdomen | Sleep, small bland meals, electrolyte drinks, no driving |
| Days 1 to 3 | Peak bloating for most donors, with clothes feeling tight | Electrolytes, protein and salt, heating pad, loose clothing, short walks |
| Days 4 to 7 | Steady improvement as energy and appetite return | Fiber, regular meals, easing back into normal activity |
| Week 2 and your next period | Remaining fullness usually disappears once your period starts | Time, plus a call if the bloating is still worsening |
Still feeling bloated five days after egg retrieval is well within normal, and so is a stubborn week and a half after a strong response. Watch the direction more than the day count: bloating that's slowly easing is doing what it should, while bloating that's worse on day five than on day three is a reason to call. More eggs usually means a slower recovery, and across our fresh matching program from 2012 through 2025 donors averaged 28.9 eggs retrieved and 22.6 mature, so a slower week is something we see often.
How many eggs you produce depends mostly on your ovarian reserve, which is what your AMH level measures. Many donors also start to feel tight and full in the last few days of stimulation, before the retrieval even happens. The same comfort measures help then too, with one addition: skip anything strenuous, because your ovaries are at their largest right before the procedure.
What does recovery actually feel like?
One of our donors who has completed four cycles talks through the side effects she had, bloating included. Hearing it from someone who has been through it can be more reassuring than any timeline we could put in a table.
How do you make bloating go away after egg retrieval?
The five things that help most with bloating after egg retrieval are electrolyte fluids, meals built around protein and fiber with a little extra salt, gentle heat on your lower belly, clinic-approved pain and gas relief, and plenty of rest. None of them will make it disappear overnight, but together they reduce bloating and relieve the pressure through the worst stretch while your body does the rest.
| What to do | Why it works | How to actually do it |
|---|---|---|
| 1. Electrolyte fluids | Helps your body hold fluid inside the blood vessels instead of in your abdomen | Two to three liters a day, alternating water with an electrolyte mix, coconut water, or a sports drink |
| 2. Protein, fiber, and salt | Protein supports fluid balance, fiber keeps a slowed gut moving, salt helps you hold the fluids you drink | Lean protein plus a vegetable or whole grain at each meal. Salted broth does double duty |
| 3. Gentle heat | Relaxes the abdominal and gut muscles and helps trapped gas move through | Heating pad on low for 15 to 20 minutes at a time, or a warm bath |
| 4. Approved pain and gas relief | Takes the edge off cramping so you can sleep, move, and eat normally | Ask your clinic first, then take it with food rather than on an empty stomach |
| 5. Rest and gentle movement | Enlarged ovaries need calm, while light walking helps circulation and digestion | Short slow walks. No running, twisting, core work, or heavy lifting until cleared |
What to eat and drink after egg retrieval
It sounds backwards to drink more when you already feel full of fluid, but staying well hydrated is one of the most helpful things you can do. If some fluid has shifted out of your blood vessels, electrolytes help your body pull it back where it belongs, and getting dehydrated only makes that shift worse. Plain water alone can dilute those electrolytes further, so alternate it with an electrolyte powder, coconut water, a sports drink or a broth-based soup. RCOG suggests letting thirst guide how much you drink, with at least a liter a day as a minimum.4
Your appetite will probably be small for a day or two, so reach for foods that do a lot in a few bites: lean protein, fiber from fruit, oats and whole grains, and a little extra salt from broth or soup. If constipation is bothering you more than the bloating, add fiber gradually and check with your nurse coordinator before taking a stool softener.
For meal ideas and what donors found easiest in the first 48 hours, see our guide to what to eat after egg retrieval.
Pain relief and how much to move
Pain medication advice varies from person to person, so check with your clinic before taking anything. Most egg donors are cleared for acetaminophen (Tylenol), and many can take ibuprofen too. If you're an intended mother preparing for a transfer, you'll usually be told to avoid NSAIDs around implantation, even though a Cochrane review rated the evidence either way as very low certainty.5 NSAIDs include ibuprofen (Advil, Motrin), naproxen (Aleve) and aspirin, and since acetaminophen isn't one of them, it's usually what clinics suggest when NSAIDs are off the table.
If your clinic suspects OHSS, the advice is stricter. RCOG recommends avoiding NSAIDs in that case because they can affect kidney function when your fluid balance is already off.4 Whatever you're cleared to take, have something to eat first so it sits easier on your stomach.
Give your body a break from running, HIIT, core work, heavy lifting and sudden twisting until your clinic says you're clear. Enlarged ovaries carry a small risk of twisting, called ovarian torsion, so short and easy walks are the way to move for now. Our guide to recovery after egg retrieval covers the full timeline for getting back to your usual activities. In the meantime, skip diuretics, "detox" teas, waist trainers and tight waistbands, which only add strain to an abdomen that's already crowded.
How do you relieve gas pain and trapped gas after egg retrieval?
Gas after egg retrieval is very common, and it can hurt more than people expect. Anesthesia, pain medication, moving around less than usual and progesterone (if you're taking it) all slow your gut down, so gas builds up and gets stuck in an abdomen that's already crowded by enlarged ovaries. Trapped gas usually feels like sharp or crampy pains that move around your belly and ease when you pass gas or have a bowel movement. If the pain stays in one spot, keeps getting worse or comes with any of the warning signs in the table above, call your clinic instead of assuming it's gas.
These are the things donors tell us help most when they feel gassy after egg retrieval:
- Take short, slow walks. A few minutes around the house or down the block is one of the quickest ways to get trapped gas moving.
- Use gentle heat. A heating pad on low or a warm bath relaxes your gut muscles so gas can pass more easily.
- Try a different position. Lying on your left side, or on your back with your knees gently drawn up, can help gas shift. Leave deep twists and core stretches for after your clinic clears you.
- Sip something warm. Peppermint or ginger tea and warm broth are soothing, and they count toward your fluids for the day.
- Ask about simethicone. Simethicone (Gas-X) works inside your digestive tract and isn't absorbed into your bloodstream, and MedlinePlus notes it usually causes no side effects when taken as directed.6 Many clinics are comfortable with it, but check first.
- Go easy on gassy foods for a few days. Carbonated drinks, chewing gum, sugar-free sweets made with sugar alcohols, and big servings of beans, broccoli or cabbage can all add to the gas.
- Stay ahead of constipation. Fluids, fiber and gentle movement keep things moving, and your nurse coordinator can tell you whether a stool softener makes sense.
Once the gas starts moving, it's a sign your digestion is waking back up, and for most people the gas pain eases within the first few days.
Does the advice change for egg donors, IVF patients, and egg freezing patients?
The causes and the comfort measures, including everything above for IVF bloating relief, are the same for everyone. What differs is the pain medication advice and what happens in the two weeks after retrieval.
| If you are | What to know about pain relief | What to expect next |
|---|---|---|
| An egg donor | Usually cleared for acetaminophen and often ibuprofen. Confirm with your nurse coordinator | Bloating eases over one to two weeks and typically clears with your next period |
| An IVF patient planning a fresh transfer | Usually advised to avoid NSAIDs (ibuprofen, naproxen, aspirin) around implantation, with acetaminophen as the alternative | Progesterone support and early pregnancy can extend bloating for several more weeks |
| An IVF patient freezing all embryos | Similar guidance to donors, but always confirm with your clinic | Recovery mirrors a donor cycle, with the transfer scheduled later |
| Freezing your own eggs | Same as a donor cycle under most protocols | No transfer follows, so bloating resolves on the standard timeline |
There's one more difference, and it works in donors' favor. When a donor responds strongly, many egg donor programs, including the clinics we partner with, use a GnRH agonist trigger instead of an hCG trigger. Because hCG is the main driver of ovarian hyperstimulation syndrome, that switch lowers the risk considerably. A Cochrane review found an odds ratio of 0.05 for OHSS with an agonist trigger in donor and recipient cycles, and ASRM's 2023 prevention guideline now recommends it as a first-line strategy with its strongest evidence grade.78
When is bloating after egg retrieval a sign of OHSS?
Bloating becomes a concern when it gets worse quickly instead of slowly easing, especially alongside any of the warning signs in the table near the top of this article. Those point to moderate to severe ovarian hyperstimulation syndrome and need a call to your clinic the same day.
How common is OHSS, and when does it show up?
Mild OHSS is common, and it's essentially the bloating this whole article is about. ASRM and the HFEA both report that roughly one in three people going through a stimulation cycle have mild symptoms, and mild cases can usually be managed at home.1 Moderate and severe cases are much less common, with Cleveland Clinic putting the overall rate under modern protocols at less than 5 percent of cycles and severe cases at under 1 percent.2 For egg donors the risk sits at the low end of those ranges, since donors are young, healthy and thoroughly screened, and are increasingly triggered with an agonist instead of hCG.
Timing matters too. RCOG separates early OHSS, which usually appears within about seven days of the trigger shot, from late OHSS, which shows up ten or more days later and is driven by the hCG of an early pregnancy.4 That distinction is reassuring for egg donors, because donors don't become pregnant from the cycle, so any reaction will be the early kind and it settles as hormone levels fall. If you're also wondering about the long term, our article on whether donating affects your own fertility covers what the research shows.
How do you reduce OHSS bloating?
Mild OHSS bloating is handled the same way as ordinary post-retrieval bloating, just more closely: fluids guided by thirst with plenty of electrolytes, protein at every meal, rest with short walks, and acetaminophen instead of NSAIDs if you need pain relief.4 Your clinic may ask you to weigh yourself every morning and keep track of how much you drink and how often you urinate so they can spot a change early. Avoid diuretics and don't cut back on fluids, since both can make the fluid shift worse. If your symptoms move into the call-your-clinic column, your care team may want to see you for bloodwork or an ultrasound.
How Donor Nexus supports you through recovery
Every Donor Nexus donor has one dedicated Case Manager from start to finish, reachable before, during and after the cycle, who works alongside the clinic nurse coordinator managing your medical care. Questions about bloating, food, activity and what's normal are exactly what we're here for, so reach out whenever something feels off or you just want some reassurance.
| Donor Nexus at a glance | Figure |
|---|---|
| Years in operation | 14, founded 2012 |
| Egg retrievals completed | 900+ |
| Eggs retrieved | 26,000+ |
| Babies born through our programs | 2,000+ |
| Average eggs retrieved per donor, 2012 to 2025 | 28.9 (22.6 mature) |
| Frozen donor egg survival rate after warming, 2012 to 2025 | 90.7% |
Our donors cycle at partner IVF clinics across the country, so where you live shapes some of the practical details of your recovery week. If you'd like to hear how it went from donors themselves, read their egg donor experiences, and you'll find our outcome data on the success rates page. If you're thinking about donating for the first time, start with becoming an egg donor, or begin your application when you're ready.
Frequently asked questions
Why do I look pregnant after egg retrieval?
Because your ovaries are enlarged and there is extra fluid in your abdomen, which is enough to take many donors up a full clothing size for several days. None of it is fat or lasting weight, and it resolves as hormone levels fall.
What should I drink for bloating after egg retrieval?
Electrolyte fluids rather than plain water alone. Powders and tablets, coconut water, sports drinks, and salted broth all work, and two to three liters a day is a reasonable target unless your clinic gives you a different one.
Can I take Gas-X after egg retrieval?
Ask your clinic, though many are comfortable with it. Simethicone works within the digestive tract rather than being absorbed into the bloodstream, which is why it is commonly suggested for trapped gas after a procedure.6
Can I take ibuprofen for bloating after egg retrieval?
Ask your clinic first. Most egg donors are cleared for acetaminophen and often ibuprofen, while intended mothers preparing for a transfer are usually told to avoid NSAIDs (ibuprofen, naproxen, aspirin) around implantation, and NSAIDs are also avoided if OHSS is suspected.
Is it normal to still be bloated 5 days after egg retrieval?
Yes, and it is common after a strong response. Direction matters more than the day count, so bloating that is slowly easing is doing what it should, while bloating that is worse on day five than on day three is a good reason to call.
When should I call my nurse coordinator?
Call the same day if you gain more than three pounds in two days, are urinating much less than usual, cannot keep fluids down, have severe or sudden abdominal pain, feel short of breath, or notice a painful swollen leg. Call any time you are unsure.
Sources
- Human Fertilisation and Embryology Authority. Risks of fertility treatment.
- Cleveland Clinic. Ovarian hyperstimulation syndrome (OHSS): causes and treatment.
- American Society for Reproductive Medicine. Ovarian hyperstimulation syndrome (OHSS) patient fact sheet. ReproductiveFacts.org.
- Royal College of Obstetricians and Gynaecologists. The Management of Ovarian Hyperstimulation Syndrome. Green-top Guideline No. 5.
- Nyachieo A, et al. Non-steroidal anti-inflammatory drugs for assisted reproductive technology. Cochrane Database of Systematic Reviews, 2019.
- MedlinePlus. Simethicone. U.S. National Library of Medicine.
- Youssef MAFM, et al. Gonadotrophin-releasing hormone agonist versus HCG for oocyte triggering in antagonist-assisted reproductive technology. Cochrane Database of Systematic Reviews.
- Practice Committee of the American Society for Reproductive Medicine. Prevention of moderate and severe ovarian hyperstimulation syndrome: a guideline. Fertility and Sterility, 2024;121:230-45.
- Saar-Ryss B, Shilo M, Friger M, et al. Is there any truth in the myth that IVF treatments involve weight gain? Frontiers in Reproductive Health, 2023;5:1327110.
Medical disclaimer
This article is a general overview of what recovery after an egg retrieval usually looks like, and it is not medical advice. Your clinic knows your protocol, your medications and how you responded to stimulation, so their guidance comes before anything you read here. Bring questions about your own recovery to your nurse coordinator, who would always rather hear from you early than late.
If you have severe or sudden abdominal pain, trouble breathing, or you cannot keep fluids down, call your clinic the same day or seek emergency care.
Last updated September 2026. The clinical guidance here is drawn from the sources listed above.
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Jazmine Corona
Jazmine is a five-time egg donor and a Donor Nexus case manager with three years coordinating donor and intended-parent cycles, so she has seen egg donation from both sides. She manages donor screening, legal c…
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