A small plastic tube with the thawed fertilized egg(s) is inserted into the womb under ultrasound guidance. To start this treatment, you should phone the clinic on the first day of your period.
When can I start the treatment?
You can start treatment with either oestradiol tablets and progesterone pessaries (stimulated FER), or you can inject yourself with an ovulating hormone during your own spontaneous cycle (unstimulated FER). The purpose of either treatment is to prepare the lining of the womb (the endometrium) to receive the thawed fertilized egg(s). If using oestradiol tablets, you should start on the first day of menstruation.
What happens during a FER treatment?
It is decided on an individual basis whether an ultrasound scan is necessary when starting, but everyone is scanned between approximately day 8 and 12 of the menstrual cycle to ensure that the endometrium is receptive to the egg. After this scan we plan when to start progesterone and set the transfer date.
The decision regarding whether to transfer one or two eggs will be made with you, although this will depend on the quality of the eggs, their stage of development at freezing, your age, the number of previous attempts and the cause of your fertility.
We cannot thaw the eggs in the morning without your written consent. You will be sent this consent when you sign up for frozen embryo replacement on the first day of your period. The frozen eggs should be used within five years of freezing.