I'm really worried. I had sex 3 weeks ago with my bf. I been sick. Nauseated and now my breast hurt every now and then. My back just started being sore too. I've been gettin head aches. I took a ept two days after my missed period but It was negative. I've been really stressed lately. I was giving my bf oral. He told me he was about to cum but instead I think he might of came in me he doesn't know if he did or not. am I pregnant?? I'm 11 days late.