Periods Late, Losing CF Instead..

Charlie

Periods are always on time thanks to the pill which I have been on 4 years until December when I stopped. It always comes on a Tuesday. Except since I stopped the pill so past two months it's been on a Wednesday. Today is Thursday and still no sign of my period. Instead I'm losing CF which usually only comes around during my fertile week.

What does this mean, any suggestions/help?