Hi I'm almost 18. My boyfriend and I had sex June 15 the day I ended my period. I'm having a really bad pregnancy scare. My stomach has bin hurting very very bad under my ribs, it hurts on and off. I have regular periods. My period normally starts in the middle of the month. I don't have any signs of being pregnant. I'm literally freaking out and can not think, so would this month my period be in the middle like last month? I haven't taken a pregnancy test, I'm going to do that when I actually miss my period. Please help!