I am currently taking Bravelle and just finished my last injections of 225 iu yesterday. The size of my follicles yesterday morning were 15.5, 16, 17, and 19. I was also instructed to take the ovidrel shot today and an iui will be performed on Monday morning. My main question is about how many of those follicles would end up mature. Also, I am hearing conflicting ideas as to whether ovidrel releases the dominant follicle or if it releases all mature follicles. I am just trying to see how my chances might be this month. Thank you for you help.