OK me and my boyfriend had sex a few times right after my period it was unprotected. He did not *** in me. I have not been really worried about it till about a week and a half ago. I was on vacation and I started getting back pains and cramps. Then I could not eat without feeling sick afterward. I didn't pay much attention to it because I thought my period was just coming but then I realized that I shouldn't start for another two and a half weeks. I never get cramps till the day before. Then a few days later I started to get gas. It was really weird because I have never gotten it before. Then other days passed and I was lightheaded, I get heat flashes, and my boobs hurt a little. I took a test about 4 days ago it was negative but I am wondering if it is to soon to tell?