Hi I feel like I'm on my period with cramps. My ovaries kinda hurt like I'm on my period. I had a little bit of blood but not a lot. My last period was on September 2nd. And I had sex September 14th. It started hurting that day and I had a tiny bit of bleeding the next day. I still had the pain the 16th but it was gone the 17th. I read online that implantation bleeding/pain doesn't happen for about 6 or 7 days after intercourse. Could implantation bleeding and cramps occur the day after sex? What could it be? Could I be pregnant?