theresp, I have always had progesterone supplements on my fresh IVF and FET cycles. I personally would have very serious concerns about doing a fresh cycle without them. In the past my LP has been significantly decreased by the stims and would be insufficient to allow a pg without the progesterone. We even increased my progesterone to 3 crinone per day for my most recent cycle since 2/day didn't seem to be enough. On the other hand, the FET I did was a natural FET, so they were probably unneccessary for that cycle but my FS prescribed them anyway since they can't hurt.