Missed the first 8 days of birth control and had unprotected sex 3 days before ovulation and on the day of ovulation. It has been about 6 days since ovulation my breast are starting to feel heavy with sharp pains and I have been really exhausted lately, I've also been having a lot of discharge. I'm suppose to start my period in 8 days. I know these can be symptoms of pms but I never got them before. Is there a good chance that I might be pregnant?