Am I pregnate?....

I'm 16....and me and my boyfriend had unprotected sex and we used the pull out method, my period had gotten established and it was always or close to the 17th or the 18th varied sometimes, well next month which was June I had my period on the 10th, 7 days early and it lasted only 3 days and was light and now I'm getting head aces, nausea, I had some pain in my lower abdomen and have been feeling tired more now. My boyfriend and me are freakin out because we don't know what to do.

Can someone please give me some advice...Thank you.