After your egg retrieval procedure, you can expect a recovery period of a few days, followed by months or years of storage until you’re ready to use your eggs. Most people take only the day of retrieval off work and feel back to normal within about a week, though your body needs a full menstrual cycle to fully reset. What happens in the longer term depends on when (or whether) you decide to use those eggs, and how many you froze relative to your age at retrieval.
The First Few Days of Recovery
The retrieval itself is done under sedation and takes about 15 to 20 minutes. When you wake up, the most common sensations are cramping in your lower abdomen, bloating, and fatigue. Your ovaries are still swollen from the hormone stimulation, and the needle used to collect eggs passes through the vaginal wall, so light spotting for a day or two is normal. Some people also feel mild nausea or dizziness from the anesthesia, which typically fades within three to five days.
Most people resume light activities within a day or two. The key restriction is avoiding strenuous exercise, heavy lifting, and any twisting movements at your pelvis for at least a week. Your ovaries remain enlarged during this time, and intense physical activity raises the risk of ovarian torsion, a painful twisting of the ovary that can require emergency treatment. Once your bloating subsides and your ovaries return to normal size, you can go back to your usual routine.
Your first period after retrieval typically arrives within 7 to 14 days, though it can take up to three to four weeks in some cases. The stimulation hormones can take up to two weeks to fully clear your system. By the end of that first post-retrieval period, most people feel completely back to normal.
Ovarian Hyperstimulation Syndrome
The most significant potential complication is ovarian hyperstimulation syndrome (OHSS), which happens when your ovaries overreact to the fertility medications. In a large study of egg retrieval cycles, about 20% of cycles produced no OHSS symptoms at all, and 45% resulted in only mild symptoms that fall within the range of a normal response to stimulation, things like bloating, mild pain, and slight nausea.
Moderate OHSS, which can involve more pronounced bloating, abdominal pain, and nausea, occurred in about 26% of cycles. Severe OHSS happened in roughly 9% of cycles and can cause rapid weight gain, vomiting, difficulty breathing, and decreased urination. Critical cases requiring hospitalization were rare, occurring in less than 1% of cycles. If your symptoms worsen rather than improve in the days after retrieval, or if you develop sharp pain or have trouble breathing, that warrants urgent medical attention.
What Happens to Your Eggs in Storage
Your eggs are preserved through a process called vitrification, which flash-freezes them so quickly that ice crystals don’t have time to form. This is important because ice crystals can damage the delicate internal structure of an egg. The eggs are stored in liquid nitrogen at roughly negative 196 degrees Celsius, and at that temperature, all biological activity stops completely.
There’s no established expiration date. Because egg freezing became widespread relatively recently, long-term data is still limited. But embryos (which are biologically similar) have produced healthy pregnancies after more than 10 years in storage, and eggs are expected to behave the same way. As long as they remain in liquid nitrogen, they don’t degrade over time. The practical limit is more about storage fees than biology. Most clinics charge $500 to $1,000 per year for storage, so over a decade, that adds up to $5,000 to $10,000 just in maintenance costs.
When You’re Ready to Use Them
If you decide to use your frozen eggs, the process involves several steps. First, the eggs are warmed (the clinical term for thawing). With modern vitrification techniques, about 90% of eggs survive the warming process. This is a significant improvement over older slow-freezing methods, and it means if you froze 15 eggs, you can reasonably expect around 13 or 14 to be viable after thawing.
Surviving eggs are then fertilized using a technique where a single sperm is injected directly into each egg. This method is necessary because the freezing process hardens the outer shell of the egg slightly, making it difficult for sperm to penetrate on their own. Fertilization succeeds in about 75% of attempts. So from those 13 or 14 surviving eggs, you might get roughly 10 fertilized eggs, or embryos.
Not all embryos develop well enough to transfer. The strongest ones are selected and placed into the uterus, typically one at a time. Any remaining healthy embryos can be frozen again for future attempts.
How Age and Egg Count Affect Your Odds
The two biggest factors in your chances of a live birth are how old you were when you froze your eggs and how many you stored. Both matter enormously, and the numbers are worth understanding clearly.
For women under 35 at the time of freezing, storing 8 to 10 eggs gives roughly a 30% to 45% chance of having a baby. Freezing 15 eggs pushes that to about 70%, and 25 eggs brings the probability to approximately 95%. Both the European Society of Human Reproduction and Embryology and the Nordic Fertility Society have noted that freezing before age 35 offers the best cost-effectiveness, with live birth rates potentially reaching 75%.
The numbers shift significantly with age. To reach a 75% chance of a live birth, a 34-year-old needs about 10 frozen eggs. A 37-year-old needs roughly 20. And a 42-year-old would need around 61, a number that often requires multiple retrieval cycles and may not be achievable for everyone. This steep decline reflects the reality that egg quality drops with age, not just egg quantity.
Having more than 15 eggs thawed in a single attempt also makes a meaningful difference regardless of age group. In one cohort study, patients who thawed more than 15 eggs had a live birth rate of 45% per patient, compared to just 13% among those who thawed fewer than 15.
If You Don’t Use Your Eggs
Many people who freeze their eggs never end up using them, whether because they conceive naturally, decide not to have children, or their life circumstances change. If that happens, you generally have three options. You can continue paying for storage indefinitely. You can have the eggs thawed and discarded. Or you can donate them, either to another person struggling with infertility or to scientific research.
Donating unused eggs to someone with depleted ovarian reserves can be a meaningful option, but it involves legal consent processes and counseling. Clinics will first confirm that you have no intention of using the eggs yourself before moving forward with any donation. It’s worth knowing these options exist from the start, since eventually every person who freezes eggs will need to make a decision about what to do with them.