Hey amy, what lairdoz said if your having a natural FET or if you have a medicated one (most common) you will start taking one 30mcg ethinylestradiol tablets on the 2nd day of your cycle then usualy you will swap to one 50mcg ethinylestradiol tablets on day 4 of your cycle, you will take these for about a week then swap back to the 30mcg ones and you will continue to take these right up until your BT to see if your pg and you will also start taking pessaries or crinone around 7 days before transfer. I had 2 BT's and 1 ultrasound during these cycles. With a natural cycle there is no meds but i had 5 BT's and 2 ultrasounds this is because they have to make sure they get the timing right. The FET cycles are much easier then the STIM cycles xx