Okay. So... I have been ordered to take Progesterone. I take 400mg a day.. the first time I took all of the 400mg, I had EXTREMELY bad cramps for like 24 hours. I mean, they were SO bad that I got home and had to lay on a heating pad. When I hit the 24 hour period since I had take both pills (200mg a piece) the cramps finally calmed down. I was SO worried that I caused a problem to the baby, but as far as I can tell, I am STILL pregnant. Anyone else on progesterone ?? Or have been on progesterone?