After 4 failed IUI's I have decided to move forward to IVF. The process has been overwhelming to say the least. Anyway today is day 5 and I went for my first scan. I was told I only had four follicles and the cycle may get cancelled. The dr. stated they like to have at least 6 follicles. My question is twofold, one, has anyone proceeded to retreival with a low number of follicles and been succesful? Secondly, is it possible more follicles will grow and mature prior to retrieval? I'm on Folistem 300 and Menopur 150.