Please don't ignore!! Help

Hey ladies so the last time I had unprotected sex was on 06/22 he pulled out lost my virginity on 6/20 and protected sex till now. I thought I had my period for the past two days it stated out light two days ago and yesterday it got heavy and today it's not as heavy anymore. Am I pregnant? I took 4 pregnancy test they were all negative btw. And my last period lasted 4 days only before I ever had sex . Am I pregnant? Chances?