Quoting Squeaky McGee:" My period starts the same, but I have a progesterone deficiency."
Quoting ♥Army Wife♥:" What is that? I am kinda worried about it because it has always been the same and plan on going to see my OB but I thought I would ask on here tonight."
Quoting Squeaky McGee:" Progesterone is the hormone that maintains pregnancy. It builds up right before your period starts, then drops off if a pregnancy does not occur."