What Happens During Egg Retrieval?

Egg retrieval is often the moment when the IVF process shifts from preparation to action. After days of injections, blood draws, and ultrasound monitoring, the eggs your body has been carefully growing are finally collected. While the procedure itself is brief, typically 15 to 30 minutes, it is natural to feel nervous about what will happen. This article covers everything you need to know about the egg retrieval process, from the final hours of preparation through recovery and beyond.

What Is Egg Retrieval?

Egg retrieval, also called oocyte retrieval or egg collection, is a minimally invasive surgical procedure in which mature eggs are removed from the ovarian follicles. It is performed after the ovarian stimulation phase of IVF, once monitoring shows that the follicles have reached an appropriate size and the eggs inside them are likely mature.

The procedure is done transvaginally, meaning there are no external incisions. A thin needle is guided through the vaginal wall into each ovary using ultrasound imaging, and the fluid within each follicle is gently aspirated (suctioned) to collect the eggs. The eggs are immediately handed off to the embryology team for evaluation.

The Days Leading Up to Retrieval

The Trigger Shot

The final and most time-sensitive step before egg retrieval is the trigger shot, administered approximately 36 hours before the scheduled procedure. This injection, usually hCG (human chorionic gonadotropin) or a GnRH agonist, initiates the final maturation of the eggs within their follicles. Without the trigger, the eggs would not be mature enough to fertilize.

Your clinic will give you a very specific time for this injection, often down to the minute. For example, if your retrieval is scheduled for 8:00 AM on a Wednesday, your trigger shot might be at 8:00 PM on Monday evening. The timing is critical because eggs need to be retrieved after they have matured but before the body ovulates and releases them naturally.

Pre-Procedure Instructions

In the days and hours before your retrieval, your clinic will typically ask you to:

• Stop eating and drinking at midnight the night before (or 8 to 12 hours before the procedure), as you will be receiving sedation
• Avoid wearing perfume, deodorant, or scented products on the day of the procedure, as these can be toxic to eggs in the laboratory
• Remove nail polish from at least one finger so the pulse oximeter can function during sedation
• Arrange transportation home, as you will not be able to drive after receiving sedation
• Wear comfortable, loose-fitting clothing that is easy to change in and out of
• Leave jewelry and valuables at home

If you take daily medications, check with your clinic about which ones to take or skip on the morning of the procedure.

The Day of Retrieval

Arrival and Preparation

You will arrive at the clinic or surgical center typically 30 to 60 minutes before your scheduled procedure time. After checking in, you will change into a hospital gown and have an IV (intravenous line) placed in your hand or arm. A nurse will review your medical history, confirm your identity and procedure details, and go over what to expect.

Your partner or sperm provider may also need to be present to produce a fresh semen sample, unless frozen sperm is being used. Some clinics have the sample produced at the same time as the retrieval; others request it earlier in the morning.

Anesthesia and Sedation

Egg retrieval is performed under intravenous sedation, sometimes called "twilight anesthesia" or "conscious sedation." This is lighter than general anesthesia but deeper than local anesthesia. The medications commonly used include:

• Propofol: A fast-acting sedative that takes effect within about 10 seconds
• Fentanyl: A short-acting pain medication
• Midazolam (Versed): An anti-anxiety medication that also produces mild amnesia

The combination of these medications means you will be in a deeply relaxed state during the procedure. Most patients have little or no memory of the retrieval itself. You will continue to breathe on your own (no breathing tube is required), but you will be continuously monitored by the anesthesia provider, who tracks your heart rate, blood pressure, oxygen levels, and breathing throughout.

Some clinics offer different sedation options. Discuss your preferences and any concerns about anesthesia with your medical team beforehand.

The Retrieval Procedure

With you comfortably sedated, the doctor begins the retrieval:

1. A transvaginal ultrasound probe with a needle guide attached is gently inserted
2. The ultrasound screen shows the ovaries and the fluid-filled follicles within them
3. A thin aspiration needle (approximately 17 to 18 gauge) is advanced through the vaginal wall into the nearest ovary
4. Each visible follicle is punctured and the follicular fluid is aspirated into a test tube connected to the needle via tubing
5. The embryologist immediately examines each tube of fluid under a microscope in the adjacent lab to identify eggs
6. The process is repeated for each follicle on both ovaries, with the doctor systematically working through all accessible follicles

The entire procedure typically takes 15 to 30 minutes, depending on the number of follicles and the accessibility of the ovaries. Some retrievals are completed in as little as 10 minutes.

It is important to know that not every follicle will contain an egg, and not every egg retrieved will be mature. Your clinic will inform you of the total number of eggs collected and how many are mature, usually the same day or the following morning.

How Many Eggs Are Typically Retrieved?

The number of eggs varies considerably from person to person. Experts generally consider 10 to 15 mature eggs to be an optimal yield for a single IVF cycle. However:

• Some patients may have 5 or fewer eggs retrieved, particularly if they have diminished ovarian reserve or are older
• Others may have 20 or more, which is more common in younger patients or those with conditions like PCOS
• The "right" number depends on your individual situation and treatment goals

What matters most is not just the quantity but the quality of the eggs, which is strongly influenced by age.

After the Procedure

Immediate Recovery

After the retrieval, you will be moved to a recovery area where you will rest for 30 to 60 minutes as the sedation wears off. During this time:

• A nurse will monitor your vital signs
• You may feel groggy, slightly nauseous, or disoriented, all normal effects of the sedation
• You might experience mild cramping or pressure in the lower abdomen
• Most patients feel well enough to leave within an hour

Before you are discharged, a nurse or doctor will typically share the initial egg count and provide post-procedure instructions. You will need someone to drive you home.

The First 24 to 48 Hours

Plan to take it easy for the rest of the day. Many patients feel well enough to return to work the following day, but listen to your body. Common experiences in the first day or two include:

• Mild to moderate cramping: Similar to menstrual cramps. Over-the-counter pain relievers like acetaminophen (Tylenol) are usually recommended. Most clinics advise avoiding ibuprofen (Advil) and aspirin, as these can affect blood clotting and the uterine lining.
• Bloating: Your ovaries are still enlarged from stimulation and the retrieval itself. This is normal and typically resolves over several days to a week.
• Light vaginal spotting: A small amount of spotting from the needle puncture sites is expected.
• Fatigue: A combination of the procedure, sedation, and the hormonal shifts of the preceding weeks can leave you feeling tired.
• Constipation: A common side effect of the hormonal medications and sedation drugs. Staying hydrated and eating fiber-rich foods can help.

Recovery Over the Following Week

Most physical symptoms resolve within three to seven days. Your ovaries may take one to two weeks to return to their normal size. During recovery:

• Avoid strenuous exercise and heavy lifting for about a week
• Avoid sexual intercourse until your doctor clears you, typically after one to two weeks
• Stay hydrated by drinking plenty of water and electrolyte-rich fluids
• Eat nourishing, easily digestible foods including protein-rich meals and soups
• Avoid baths and swimming pools for several days to reduce infection risk; showers are fine

Potential Risks and Complications

Egg retrieval is a safe procedure, and serious complications are rare. However, it is important to be aware of the potential risks:

Ovarian Hyperstimulation Syndrome (OHSS)

OHSS occurs when the ovaries over-respond to stimulation medications, causing them to swell and leak fluid into the abdominal cavity. It affects approximately 3% or fewer of IVF patients. Symptoms range from mild (bloating, nausea) to severe (rapid weight gain, difficulty breathing, reduced urine output).

Mild OHSS usually resolves on its own within 7 to 10 days. Severe OHSS requires medical attention and may occasionally need hospitalization. Risk factors include young age, low body weight, PCOS, high AMH levels, and a large number of follicles.

Your clinic takes steps to minimize OHSS risk, including adjusting medication doses, using GnRH agonist triggers instead of hCG, and recommending a freeze-all approach (freezing all embryos and delaying transfer) when risk is elevated.

Infection

The risk of infection from egg retrieval is very low, estimated at less than 0.1%. Preventive antibiotics are often prescribed. Contact your clinic if you develop a fever above 101 degrees F (38.3 degrees C), worsening pelvic pain, or foul-smelling vaginal discharge.

Bleeding

While mild spotting is normal, significant internal or external bleeding is rare. The aspiration needle is thin, and the doctor uses real-time ultrasound guidance to avoid major blood vessels. If you experience heavy vaginal bleeding or signs of internal bleeding (such as dizziness, lightheadedness, or a rapid heart rate), contact your clinic immediately.

Injury to Surrounding Structures

Very rarely, the needle may contact the bowel, bladder, or blood vessels near the ovaries. This complication is exceedingly uncommon in the hands of experienced practitioners.

When to Call Your Doctor

Contact your fertility clinic or go to the emergency room if you experience:

• Severe or worsening abdominal pain that does not respond to over-the-counter pain relief
• Heavy vaginal bleeding (soaking a pad in an hour or less)
• Fever above 101 degrees F (38.3 degrees C)
• Difficulty breathing or shortness of breath
• Inability to keep fluids down due to persistent vomiting
• Rapid weight gain of more than 2 to 3 pounds per day
• Significantly decreased urination
• Dizziness or fainting

What Happens to Your Eggs Next

On the same day as your retrieval, the eggs are evaluated for maturity and either fertilized using conventional IVF or ICSI. The following morning, the embryology team checks for fertilization, and over the next three to six days, the resulting embryos are cultured and monitored for development.

You will receive updates from your clinic during this period. The waiting can be emotionally challenging, but remember that every stage of the process is a step forward.

Emotional Considerations

Beyond the physical aspects, egg retrieval can stir up a range of emotions. Some patients feel relieved that the injection phase is over. Others feel anxious about the egg count or what comes next. If the number of eggs retrieved is lower than expected, it is natural to feel disappointed, but remember that egg quality matters more than quantity, and it takes only one good embryo to achieve a pregnancy.

Be gentle with yourself during this time. Lean on your partner, a friend, or a support group. The fertility community is vast and compassionate, and you do not have to process these feelings alone.

A Note on Medical Guidance

This article is for informational purposes only and is not a substitute for professional medical advice. The authors of this blog are not doctors or medical professionals. Always consult with your fertility specialist or healthcare provider before making any decisions about your treatment. Every person's fertility journey is unique, and your doctor can provide guidance tailored to your specific situation.

Conclusion

Egg retrieval is a brief but pivotal step in the IVF process. Knowing what to expect before, during, and after the procedure can help ease the anxiety that naturally accompanies it. The vast majority of patients tolerate the procedure well and recover quickly. Whatever your egg count, this step represents real progress on your fertility journey, and that is something to acknowledge and feel good about.