I asked 2-3 weeks ago about taking Prometrium. That my doctor had prescribed it in case I felt I needed it. She wanted me to see the next cycle or two what my body would do since before I saw her I had an 11 day LP and then a 9 day LP. Well, I just got AF so that makes it a second month in a row I've had a 9 day LP which isn't good. Do you think I should try the Prometrium next cycle? I've already tried the B-vitamins to try and help it, but it's not working and it's been months. I'm feeling I should try it. She said I start taking it CD16-CD28. What do you think? I'd hate to just keep waiting and waiting and just wasting months. I know this may not be why we wouldn't be getting PG, but it's a possibility. I don't know. I've always had a shorter LP, 9-10 days, which used to alternate, but now it's just a straight 9 day LP. Chat Icon