Egg Retrieval: What to Expect Before, During, and After

What Is Egg Retrieval?

Egg retrieval — also called oocyte retrieval, ovum pickup, or follicular aspiration — is a minor surgical procedure that collects mature eggs from your ovaries for use in IVF. It is one of the most important steps in the IVF process and typically occurs about 10 to 14 days after starting ovarian stimulation medications.

The procedure is performed under sedation or light general anesthesia and takes approximately 20 to 30 minutes. Using transvaginal ultrasound guidance, a thin needle is passed through the vaginal wall into each ovary to aspirate the follicular fluid, which contains the eggs. The fluid is immediately handed to the embryology laboratory, where embryologists identify and isolate the eggs under a microscope.

For most patients, egg retrieval is far less intimidating than it sounds. Because you are under sedation, you will not feel pain during the procedure. Recovery is typically quick — most patients go home within 1 to 2 hours after the procedure and return to normal activities within 24 to 48 hours.

Before the Procedure — Preparation Checklist

The days leading up to your egg retrieval involve several important preparations. Following these instructions carefully is essential for both your safety and the success of the procedure.

Fasting Instructions

Because you will receive sedation or anesthesia, you must follow strict fasting guidelines:

• No food or solid liquids for at least 8 hours before your scheduled procedure time.
• No clear liquids (including water, black coffee, and clear tea) for at least 2 hours before the procedure.
• Your clinic will provide specific timing based on your scheduled retrieval time — follow their instructions exactly.

Medication Instructions

• Take any prescribed medications as directed by your doctor on the morning of retrieval with a small sip of water.
• Stop taking stimulation injections — your trigger shot is the last injection before retrieval.
• Inform your clinic about all medications, supplements, and herbal remedies you are taking.

Day-Before and Morning-Of Checklist

• Confirm your retrieval time with the clinic and arrange transportation — you cannot drive yourself home after sedation.
• Pack a small bag with comfortable, loose-fitting clothes, sanitary pads (not tampons), and your ID.
• Remove nail polish and avoid wearing jewelry, contact lenses, makeup, or perfume.
• Shower the night before or morning of using antibacterial soap if instructed.
• Have a heating pad and over-the-counter pain relief (acetaminophen) ready at home for recovery.
• Arrange for someone to stay with you for the first 24 hours after the procedure.
• Clear your schedule for the day of retrieval and the following day — plan to rest.

The Trigger Shot — Timing Is Everything

The trigger shot is one of the most precisely timed events in your IVF cycle. It is administered approximately 35 to 36 hours before your scheduled egg retrieval, usually in the evening.

What the Trigger Shot Does

The trigger injection contains human chorionic gonadotropin (hCG) or a GnRH agonist. It mimics the body's natural LH (luteinizing hormone) surge, which signals the eggs to complete their final maturation phase — a process called meiotic maturation. Without this trigger, the eggs cannot be retrieved because they are not yet mature enough to detach from the follicle wall.

Types of Trigger Shots

• hCG trigger (Ovidrel, Pregnyl, Novarel): The traditional trigger. Provides a strong, sustained signal for final egg maturation. It has a longer half-life, which means it continues supporting the corpus luteum after retrieval. However, it carries a higher risk of ovarian hyperstimulation syndrome (OHSS) in patients who produce many follicles.
• GnRH agonist trigger (Leuprolide, Buserelin, Decapeptyl): Often used for patients at high risk of OHSS, such as those with PCOS or very high follicle counts. This trigger produces a shorter, more natural LH surge and significantly reduces OHSS risk. However, it requires more intensive luteal phase support after retrieval.
• Dual trigger: A combination of both hCG and a GnRH agonist, sometimes used to optimize egg maturation rates while managing OHSS risk in borderline cases.

The Egg Retrieval Procedure — Step by Step

Here is exactly what happens on the day of your egg retrieval, from arrival to discharge.

Anesthesia and Pain Management

Understanding the type of anesthesia used and what to expect for pain management can help alleviate concerns about the procedure.

Type of Anesthesia Used

Egg retrieval is typically performed under conscious sedation or monitored anesthesia care (MAC). This is not the same as general anesthesia — you will breathe on your own without a breathing tube. The medications used — typically a combination of a sedative (such as midazolam or propofol) and a short-acting opioid pain reliever (such as fentanyl) — produce a state of deep relaxation and amnesia. You will be asleep and pain-free, but your vital functions remain independent.

In some clinics, particularly in countries where sedation protocols differ, egg retrieval may be performed under local anesthesia with oral sedation, or under full general anesthesia. Discuss the anesthesia plan with your clinic during your pre-procedure consultation.

Pain Management After the Procedure

Once the sedation wears off, most patients experience mild to moderate cramping similar to menstrual cramps. Pain management strategies include:

• Acetaminophen (Tylenol/Paracetamol): The first-line recommendation. Take as directed by your clinic.
• Avoid NSAIDs: Do not take ibuprofen (Advil, Motrin), naproxen (Aleve), or aspirin unless specifically instructed by your doctor, as these can increase bleeding risk and may interfere with implantation if you are planning a fresh transfer.
• Heating pad: Applied to the lower abdomen can provide significant relief from cramping.
• Prescription pain medication: In rare cases of more significant pain, your doctor may prescribe a short course of stronger pain relief. Most patients do not need this.

How Many Eggs Can You Expect?

The number of eggs retrieved is one of the most common concerns for IVF patients. While every cycle is different, understanding the factors that influence egg yield can help set realistic expectations.

Factors That Influence Egg Numbers

• Age: This is the single most important factor. Women under 35 typically produce more eggs than women over 38. Ovarian reserve declines naturally with age.
• AMH level: Anti-Müllerian Hormone is a key indicator of ovarian reserve. Higher AMH generally correlates with more eggs retrieved.
• Antral follicle count (AFC): The number of small resting follicles visible on ultrasound at the start of your cycle is a strong predictor of response.
• Response to stimulation: Some women are high responders (producing many follicles), while others are poor responders despite good ovarian reserve markers.
• Medication protocol: The type and dosage of stimulation medications affect how many follicles develop.

Typical Ranges by Age

Note: These ranges represent averages and vary significantly between individuals. Your monitoring ultrasounds will provide the best indication of how many eggs you are likely to produce.

Recovery — What to Expect After Retrieval

The recovery period after egg retrieval is typically short, but knowing what to expect — and what is normal versus concerning — helps you navigate the days after the procedure with confidence.

Day of Retrieval (Day 0)

• Cramping and bloating: Expect mild to moderate pelvic discomfort and a feeling of abdominal fullness. This is normal as your ovaries remain enlarged from stimulation.
• Spotting or light bleeding: Light vaginal spotting is common for 24 to 48 hours. Use sanitary pads, not tampons, to monitor bleeding and reduce infection risk.
• Fatigue and grogginess: The sedation effects can linger for several hours. Do not drive, operate machinery, or make important decisions for at least 24 hours.
• Nausea: Some patients experience mild nausea as the anesthesia wears off. Eating bland foods (crackers, toast, rice) can help.

Day 1 – 2 After Retrieval

• Most patients feel significantly better by the morning after retrieval.
• Mild cramping and bloating may persist but should be improving, not worsening.
• You can resume light activities but avoid strenuous exercise, heavy lifting (over 10 lbs / 5 kg), and sexual intercourse.
• Continue drinking plenty of fluids — electrolyte beverages (such as Gatorade or coconut water) are particularly helpful for managing bloating.

Day 3 – 7 After Retrieval

• Most patients feel back to normal by day 3 to 5.
• Your first period after retrieval typically arrives 10 to 14 days after the procedure. It may be heavier or more uncomfortable than usual.
• Avoid swimming, baths, and hot tubs until bleeding has stopped completely and your clinic clears you.

Recovery Do's and Don'ts

OHSS Warning Signs — When to Seek Help

Ovarian Hyperstimulation Syndrome (OHSS) is a potentially serious complication that can occur after egg retrieval, particularly in patients with PCOS, high AMH, or a large number of follicles. It results from the ovaries becoming swollen and leaking fluid into the abdomen.

OHSS can range from mild (manageable at home) to severe (requiring hospitalization). Knowing the warning signs allows you to seek help early, when treatment is most effective.

OHSS Warning Signs — Contact Your Clinic Immediately If You Experience:

• Severe or worsening abdominal pain — not just discomfort, but pain that interferes with daily activities
• Rapid weight gain — more than 2 pounds (1 kg) in a single day or 5 pounds (2.5 kg) over 2 to 3 days
• Severe bloating or abdominal distension — your abdomen feels tight, hard, and visibly swollen
• Persistent nausea or vomiting — unable to keep fluids down
• Decreased urination — producing very little urine despite drinking adequate fluids; urine may be dark in color
• Shortness of breath or difficulty breathing — especially when lying flat
• Dizziness, lightheadedness, or fainting

Who Is at Higher Risk?

• Women under 35 years old
• Women with PCOS (Polycystic Ovary Syndrome)
• High AMH levels (typically above 3.5 ng/mL)
• High antral follicle count (AFC above 20)
• Previous history of OHSS
• Very high estradiol levels during stimulation (above 4,000 pg/mL)
• Large number of follicles on ultrasound (above 20)

Your clinic monitors for OHSS risk throughout your stimulation cycle and may adjust your protocol — for example, by using a GnRH agonist trigger instead of hCG, or by recommending a freeze-all cycle instead of a fresh transfer — to reduce your risk.

What Happens to Your Eggs After Retrieval?

While you are recovering from the procedure, a lot is happening in the embryology laboratory. Understanding this process can help you feel connected to what is happening with your eggs and embryos.

Immediately After Retrieval (Day 0)

As the follicular fluid arrives in the lab, embryologists work quickly to identify and isolate the eggs. Each egg is surrounded by cumulus cells — a cloud of supporting cells that nourished the egg inside the follicle. The embryologist counts the eggs and assesses which ones appear mature based on the appearance of the cumulus-oocyte complex.

The eggs are placed into a specialized culture medium in an incubator maintained at 37°C (body temperature) with controlled levels of carbon dioxide and humidity to mimic the conditions inside the body.

Fertilization (Day 0 – Day 1)

Approximately 2 to 4 hours after retrieval, fertilization begins. There are two methods:

• Conventional IVF: Approximately 50,000 to 100,000 prepared sperm are placed in the culture dish with each egg. The sperm must penetrate the egg on their own. This method is used when sperm parameters are normal.
• ICSI (Intracytoplasmic Sperm Injection): A single, carefully selected sperm is injected directly into each mature egg using a microscopic needle. ICSI is used when there are male factor infertility issues, previous fertilization failure, or when using frozen eggs.

The next morning (Day 1), the embryologist checks for signs of fertilization. A normally fertilized egg will show two pronuclei — one from the egg and one from the sperm. This is when you will typically receive your first fertilization report.

Embryo Development (Day 2 – Day 6)

Over the following days, the fertilized eggs (now called embryos) continue to divide and develop in the incubator. Your clinic will typically provide updates at key milestones — Day 1 (fertilization), Day 3 (cleavage stage), and Day 5-6 (blastocyst stage). The embryos are graded at each stage based on cell number, symmetry, fragmentation, and (at the blastocyst stage) the quality of the inner cell mass and trophectoderm.

When Can You Travel Home?

For patients traveling for IVF — including international patients coming to Shenzhen through FertiJourney — understanding when it is safe to travel after egg retrieval is an important practical consideration.

If You Are Doing a Fresh Transfer

If you are planning a fresh embryo transfer in the same cycle, you will need to remain near the clinic for the embryo transfer, which occurs 3 to 5 days after retrieval. After the transfer, most clinics recommend avoiding long-distance travel for at least 24 to 48 hours. Plan to stay in the area for approximately 7 to 10 days from retrieval to transfer, plus 1 to 2 days of rest after transfer before flying home.

If You Are Doing a Freeze-All Cycle

If all embryos will be frozen for a future frozen embryo transfer (FET), you can typically travel home 48 to 72 hours after egg retrieval, provided you are feeling well and have no signs of OHSS. Confirm with your doctor before booking your return travel. Avoid very long flights (over 8 hours) for at least 5 to 7 days after retrieval to reduce the risk of blood clots, especially given the elevated estrogen levels after stimulation.

Travel Precautions

• Stay well-hydrated during travel — drink water and electrolyte beverages.
• Wear compression stockings for flights longer than 4 hours.
• Get up and walk every 1 to 2 hours during long flights to promote circulation.
• Avoid heavy lifting of luggage — ask for assistance or use luggage carts.
• Keep your clinic's emergency contact information readily available.
• Know where the nearest hospital or medical facility is at your destination.