So I had my cycle on the 3rd which last about 3 days which would be on the 6th. I charted my ovulation day which would had been the 19th. Been having unprotected sex with my partner since the 6th after my cycle. CD12-CD16 was my fertile days and CD17 was my Ovulation day. 5 days after ovulation day I've been experiience mild cramping, March 22, 2013 I've been feeling tired and sleeping earlier then normal, woke up about 7am feeling dizzy and a little nauseas, having repeatedly headaches and backaches, and i don't ever get these symptoms before or after my cycle occurs. Im not sure what this could be other then pregnancy.