After a failed IVF cycle: how long should you wait before the next attempt?

A negative test result after an embryo transfer is a difficult time, and I never treat it as a mere administrative formality. But I also know that, very quickly, patients want a timeline: to know when their body will be ready, when the frozen embryos can be transferred, and when they’ll need to book another trip. Here’s what we know, step by step.

The days following a negative test

The clinic will usually ask you to stop taking progesterone and oestrogen. Your period will then return, usually within a week. It may be heavier or more painful than usual, which is common after hormone treatment. If your period has not returned after two weeks, let the clinic know: it is sometimes necessary to check your hCG levels.

This first cycle is important for what follows: it is often the first day of this cycle that serves as the starting point for the next cycle. Make a note of it and pass this information on to the clinic.

If you have any frozen embryos left

For a long time, it was recommended to wait for a ‘rest’ cycle between two transfers, or between an egg retrieval and the first frozen embryo transfer. Recent data do not support this practice, at least following an egg retrieval. A meta-analysis published in 2021, combining fifteen retrospective studies, compared frozen embryo transfers carried out in the first cycle with those that had been deferred, following an unsuccessful fresh transfer or the freezing of all embryos: twelve out of fifteen studies found no difference, and the overall analysis even showed a slight advantage to immediate transfer. The authors conclude that postponing the transfer may not be best practice, whilst emphasising that the data remain of modest quality.

In practice, preparations for the next transfer can often begin as early as the cycle following your period, whether it is a natural or a hormone replacement (HRT) cycle: see natural cycle or hormone replacement (HRT) cycle. The clinic sets the date, based on your cycle and its schedule.

If further stimulation is required

The same logic applies to a further egg retrieval. An American study on consecutive stimulation cycles compared patients who resumed treatment after a single cycle’s interval with those who waited two cycles or more: ovarian response, the number of eggs, fertilisation and live births were comparable. The study is retrospective and single-clinic, but it is consistent with the practice of many clinics.

However, there are good reasons to wait a little while: a persistent cyst on the follow-up ultrasound scan, hyperstimulation in the previous cycle, a protocol requiring thorough review, or simply the need to take a breather. In these cases, the waiting period is a medical and personal decision, not a rule.

After a miscarriage

After a miscarriage, one generally waits for hCG levels to return to negative and for a normal period to resume before restarting treatment. As for the waiting period itself, a meta-analysis of sixteen studies involving over a million women found no disadvantage to conceiving within six months of a miscarriage: the risk of a further miscarriage and that of preterm birth were even slightly lower than after a longer waiting period. These studies focus on spontaneous pregnancies, but they dispel the notion that one should ‘let the womb rest’ for a long time. Further details can be found at fertility after a miscarriage.

The waiting period that really matters: the time needed for analysis

Trying again quickly only makes sense if you know what you’re doing and why. Before setting a new date, ask for a follow-up consultation with your doctor – via video call if you’ve returned home. Questions to prepare:

• What was the quality of the transferred embryos, and how many remain? See how to read the embryo report.
• Was the response to stimulation as expected?
• Was the endometrium well prepared, and does the protocol need to be changed?
• After several failed attempts, which further investigations are worthwhile, and which are not? See the assessment of implantation failures.

A single failure with a good-quality embryo is not, in itself, a sign that everything needs to be changed. The chances accumulate from one attempt to the next; the article on the number of attempts explains how to approach this.

Emotional and financial time

No study measures how long you need to recover from a failure, and yet it is often this timeframe that is decisive. Some patients want to try again as early as the next cycle, so as not to let the waiting take hold. Others need two or three months. Both approaches are valid. Psychological support can help you make this choice; see what really helps.

For patients travelling

A frozen embryo transfer requires a short stay, often two to four nights, and can largely be prepared at home. Keep any unused medication if it is still within its expiry date: it may be used in the next cycle, subject to the clinic’s approval. Book changeable tickets, as the transfer date depends on your cycle. Full details can be found in frozen embryo transfer in Greece.

If you’d like us to plan your follow-up consultation or the schedule for your next attempt together, please write to me.

Frequently asked questions

Source: https://fertilitegrece.com/en/blog/after-failed-ivf-when-to-try-again/ — Triada Baloukoudis, IVF patient coordination in Greece. General information, not medical or legal advice. Printed on

Triada Baloukoudis
Independent IVF patient coordinator in Thessaloniki, with 24 years of experience supporting patients travelling from abroad. More · Contact · Facebook