What should you know about frozen thawed embryo transfer?

A frozen thawed embryo transfer places a previously frozen embryo into the uterus after the womb lining has been prepared. The embryo is warmed in the laboratory and checked before transfer. The procedure is usually done through the vagina and cervix with a thin catheter, without an abdominal incision.

Preparation may use your natural cycle or medicines that organise the timing of ovulation and support the uterine lining. Micronised progesterone may be prescribed to help coordinate the lining with embryo development. On transfer day, the clinic confirms the timing, warms the embryo, and guides the catheter into the uterus. A pregnancy test is arranged after the transfer; taking a test too early can be misleading if fertility medicines are still in your system.

Follow the clinic’s instructions for medicines and appointments, and tell the team about new medicines, bleeding, or illness. Wear comfortable clothing and plan a calm return home. Normal gentle activity is generally more practical than strict bed rest, unless your clinician gives different advice. Continue prescribed support until the clinic explains whether to stop or change it. IVF planning may help explain how this stage fits into assisted reproduction.

Contact your fertility team promptly for heavy bleeding, severe or worsening pelvic pain, faintness, fever, breathing difficulty, or marked abdominal swelling. These symptoms need assessment rather than being judged by the pregnancy-test result. Mild cramps or light spotting can occur, but report them if they persist, become troublesome, or concern you.

Ask which cycle plan is being used, how the embryo was graded, when to take the pregnancy test, which medicines to continue, and which symptoms need same-day advice. You can also ask what happens if the transfer is postponed or the test is negative.