I've been TTC for 8 cycles and my last three were 45 days long, so my Dr prescribed Progesterone. I started my 10 tablets on Tues Dec 13th and took the last one Thurs Dec 22nd. AF came today, Dec 28th, but it's heavier than I've ever had and I've got terrible cramps. Anyone else have these side effects when taking it?? How long did you take it before you got pregnant?