Hello. i am 23, 5'3" and 139lbs. I have had problems in the past using birth control, mainly severe headaches and spotting/bleeding in between periods. I took the mediation in the past for contraceptive purposes and because I had a very irregular period in which I would go without having menses for 3 months at a time. I have been off birth control for about 2 or 3 months now but I have not had my period since I have stopped. additionally i have been having unprotected sex. I took a pregnancy test about 3 weeks ago which was negative. currently I have started to have some tenderness in my lower abdomen, mostly when pressure is applied along with sensitive/sore nipples, and painful intercourse (pain occurs mostly with deep penetration). Are these symptoms related and do they mean i might be pregnant?