The only time I get the fertile cm is when I'm on AF. When I became pregnant I know its cause me and my so had sex before af showed. A couple days after af was gone I found out I was pregnant. That pregnancy was sadly a chemical. I'm worried that if this is what's really happening that it may be the cause of my chemical pregnancy. Isn't af when something happens to the uterine lining? And possibly why the baby didn't implant correctly? I'm just so stressed anyone else ovulate like I do? Or is it possible I ovulate late in my cycle but AF comes a few days after?