Hello, my name is Victoria. I am going through infertility treatment right now and was stimulated with Letrozole 7.5 from day 3-7 and then Gonal-F injections 100 units a day for four days, when I came for the ultrasound our IUI cycle was cancelled due to too many follicles, more then 19. I was not triggered with HCG shot. And I was given a birth control for 21 day without an explanation of why I need to drink it. Obviously we will abstain from intercourse to avoid pregnancy. But what is the purpose of birth control? Are doctors just protecting us from getting pregnant or is there some other reason for drinking birth control. I dont do too well on any birth control pills and I feel like i have too many hormones in my body right now. Thank you.