I'm 17 and I've had a very regular period since I've been on the ortho evra patch. Which is a about a year and a half. I recently stopped putting it on, the 28th of February and I had a normal period on the 10th of March. It was supposed to come on the 2nd of March but it was late because of my surgery, which was 22nd of February. Since my last period I've had really bad stomach pains and nauseating headaches, I'm more irritable, I'm tired all the time, and I feel bloated, and every time I eat the stomach pains get worse and I start to feel sick to my stomach, but no vomitting. My next period wasn't due until the 17th of April, but instead it came on the 6th of April. Between March 9th and now I've had unprotected sex every weekend and each time he stayed in. The last time I had sex was the 5th of April and my period came on the nxt day(6th of April). I took a home pregnancy test, on the 7th of April, and it came back negative. Is there a possibility that I may still can be pregnant, since my period was early this month.