If the clinic feels that your extra embryos are high enough quality to be frozen for future use, then you should take their advice. It will not only save you money but also it is generally less stressful and less traumatic to go through a frozen-thawed embryo transfer than to begin a fresh IVF cycle.

A natural cycle FET is for women who have regular menstrual cycles. The natural cycle would be most ideal as your cycle will be monitored to determine the correct timing to transfer the embryos, and this is synchronized to the age of the embryo. You do not have to take any medication.

A medicated FET is suitable for a woman who does not ovulate or ovulates irregularly. This involves two treatment protocols.

You will be given medications (sometimes with suppression drugs), Estrogen and then some form of Progesterone to create an artificial cycle. This allows the clinic to have more control over when to transfer the embryos. This cycle is ideal for Ovum Recipients and those who do not ovulate regularly.

You will be given similar drugs as in an IVF cycle but only sufficient to stimulate a small number of follicles to enable the development of the endometrium to receive the thawed embryos.

It is difficult to determine whether all of your embryos will survive the freeze/thaw process. The result will only be known on the day of thawing. Different clinics have different policies for freezing and the survival rate greatly depends on the quality of the embryos at freezing.