Hi BeiBei,

Lucrin delays your AF. In my case, as much as 7 days, but for some even more than that.

I've never had AF arrive on time while on Lucrin. But if it's late by more than 5 days, my clinic gives me a BT to check my progesterone levels. They can usually tell you if AF is around the corner or not.

HTH.

sushee

ETA I kept meaning to reply to you in the LTTTC forum but it slipped my mind!