(Representational Image)
Egg freezing is often planned around a woman’s menstrual cycle, which can make irregular or absent periods seem like a barrier to treatment. But not having regular periods does not automatically mean that egg freezing is not possible.
What should a woman do before deciding?
22 Sept 2026 | 15:01 During an egg-freezing cycle, hormonal medications are used to stimulate the ovaries so that multiple follicles can develop. The stimulation protocol and medication doses may therefore need to be adjusted to balance egg yield with safety. The approach is therefore determined by the woman’s ovarian reserve, hormone profile, ultrasound findings and overall health rather than by the calendar alone.
Most importantly, irregular periods should not be treated as an automatic “no” to egg freezing. What matters first is why the periods are irregular or absent and what that means for ovarian function. This is why women with irregular periods usually need an individual assessment before starting an egg-freezing cycle rather than being ruled out based on their menstrual pattern alone. The eggs are then retrieved and frozen for potential future use. A regular period is not, by itself, what determines whether the ovaries can respond to this stimulation. Doctors instead look at factors such as ovarian reserve, antral follicle count, hormone levels and the woman’s age, along with her medical and reproductive history. For some women, the absence of periods may actually be linked to a condition that needs to be addressed before stimulation begins. In others, the ovaries may still contain a reasonable number of follicles even though periods are unpredictable. PMOS is one of the common reasons for irregular or absent periods. Women with PMOS may still have a good number of developing follicles, and egg freezing can be considered when clinically appropriate. However, the response to stimulation needs to be monitored carefully. Women with a high follicle count may respond strongly to fertility medicines and can have a higher risk of ovarian hyperstimulation syndrome (OHSS). Absent periods, or amenorrhoea, can have several causes. Sometimes it is related to hormonal conditions, significant changes in weight, excessive exercise or stress. It can also occur when ovarian function has declined. These situations are not interchangeable. If the ovaries have a reduced reserve or are no longer functioning normally, egg retrieval may produce fewer eggs or, in some cases, may not be possible. On the other hand, some women with absent periods may still have follicles that can respond to stimulation. This is why the absence of menstruation should prompt an evaluation rather than an assumption about egg-freezing eligibility. In selected cases, yes. Egg-freezing treatment does not always have to follow a predictable natural menstrual cycle. Depending on the underlying condition and the findings on assessment, a fertility specialist may use hormonal medication or an individually planned stimulation protocol to begin treatment. If periods are highly irregular or have stopped, it is worth finding out the reason before planning egg freezing. A fertility specialist may assess ovarian reserve through blood tests and ultrasound and may recommend additional hormonal investigations depending on the history. They are a reason to look more closely at what is happening with ovarian function. For women considering it, understanding their ovarian reserve and the reason behind an irregular cycle can help determine whether freezing is appropriate, when it should be done and what kind of response to treatment can realistically be expected. (Dr Navina Singh, Fertility Specialist, Birla Fertility & IVF, Mumbai) You use AI every day. Now get your AI Quotient. Take the AIQ test Get the latest Lifestyle News and more. Download the TOI app.
Conditions such as PMOS (earlier known as PCOS), thyroid disorders, hormonal imbalances and reduced ovarian reserve can all affect the menstrual cycle, but they do not affect fertility in exactly the same way. Egg freezing is ultimately about preserving the eggs that are available today.