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Understanding Menstrual Changes After Egg Retrieval

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Egg retrieval is a crucial step in the In-Vitro Fertilisation (IVF) and Frozen Embryo Transfer (FET) processes, often leading to several menstrual changes afterward. 

Egg retrieval involves collecting mature eggs from a woman's ovaries to be fertilised with sperm in a laboratory. After a process of ovarian stimulation (by taking hormonal injections), the egg retrieval occurs via a minor surgical procedure, which can lead unexpected menstrual changes.

These changes can include delays in the onset of the first and second period, changes to flow, and irregular cycles and symptoms as your body adjusts to the hormonal treatments. Understanding these menstrual changes can help you better navigate your IVF journey. 

 


Menstrual changes after egg retrieval:

Delayed Menstruation 

It's common for the next menstrual period to be delayed after egg retrieval. The hormones used to stimulate the ovaries can disrupt the normal menstrual cycle, causing a delay. Once this first period occurs, it may also take some time for the body's natural hormonal cycle to reestablish itself. This can sometimes result in a second period being delayed or irregular.

Changes to Menstrual Flow 

The first and second period after egg retrieval can be heavier or lighter than usual. This variability is due to the hormonal fluctuations and the effects of the medications used during the ovarian stimulation, learn more about ovarian stimulation here.

Heavy bleeding may also be accompanied by more severe cramps. This is due to the thickened lining of the uterus by hormonal stimulation​.

Menstrual Cramps

Some women may experience more intense menstrual cramps during their first period after egg retrieval. The ovaries can remain enlarged and sensitive following the procedure, contributing to increased discomfort. 

Cycle Irregularity 

Many women find that their menstrual cycles may not return to their usual regularity immediately after the first egg retrieval. This is because the body needs time to normalise its hormonal balance after IVF which can cause temporary disruptions in your normal cycle length and flow. Therefore, it is not uncommon for the second period to also be delayed as the body adjusts hormonally. 

These changes are generally temporary. However, if there are any concerns or if the menstrual irregularities persist, it is important to consult with a healthcare provider. 

After egg retrieval, typically as part of an IVF treatment, the types of menstrual periods a woman may experience can be categorised based on their timing and nature relative to the treatment cycle. Here are the common types:

First Period After Egg Retrieval:

This usually occurs about 10 to 14 days after egg retrieval if no embryo is transferred, or if an embryo transfer does not lead to pregnancy. This period marks the shedding of the uterine lining that was built up in anticipation of a possible pregnancy.

Delayed or Irregular First Period:

Sometimes, the first period after retrieval can be delayed or more irregular than usual due to the hormones administered during the IVF cycle. This can also affect the flow and symptoms associated with the period.

Second Period After Egg Retrieval:

If the first IVF attempt is not successful, and no further treatment is initiated immediately, the second period will typically follow the natural cycle of the woman, though it may still be influenced by the previous hormone treatments. This period might be more regular than the first post-retrieval period if the body has begun to normalise.

Absent Periods:

Absence of periods after egg retrieval might occur if the woman becomes pregnant following the embryo transfer. Alternatively, absent periods can be a concern if they do not resume a normal cycle after treatment, indicating the need for further medical evaluation.

Prolonged or Continuous Bleeding:

Some women might experience prolonged bleeding or spotting due to the hormonal changes or as a side effect of the procedures involved in egg retrieval and embryo transfer.

How to Prepare for your IVF Journey 

Fertility expert Zita West and Aria Fertility Clinic Director & Embryologist Robert Smith hosted a free webinar to help you learn how to enhance your IVF success both holistically and scientifically.  

Additionally, Zita West offers an ultimate set of visualisations Pre Transfer, Transfer, Post Transfer and Two-Week Wait, to support you holistically throughout your IVF journey.

Menstrual Changes After Egg Retrieval FAQ

What can I expect for my second period after egg retrieval?

After undergoing egg retrieval, it is common to notice changes in menstrual cycles. Your second period may be delayed or different in flow due to hormonal fluctuations caused by the procedure.

Is it normal to miss my second period after egg retrieval?

Missing your second period after egg retrieval isn't uncommon. The process involves significant hormonal interventions which can disrupt your menstrual cycle temporarily. If concerns arise, it is advisable to consult with your healthcare provider.

Why is my second period after IVF late?

A delayed period after IVF can result from the hormonal treatments used during the process. These treatments can affect how your body normally regulates menstrual cycles. If your period is significantly late, it's a good idea to discuss this with your fertility specialist.

Can egg retrieval mess up my menstrual cycle?

Yes, egg retrieval can temporarily alter your menstrual cycle. The hormones used during IVF treatment can impact the timing and nature of your periods, causing irregularities such as delayed or missed periods.

Is it normal to get my period just 5 days after egg retrieval?

Getting your period shortly after egg retrieval can occur but isn't very typical. This might be a light bleeding or spotting, which some women experience post-procedure. If you have any concerns about the timing or nature of your bleeding, consult your doctor.

 

Further reading

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