On Friday, July 3 (actually more like July 4th, it was around 2am) I was fooling around with this guy while intoxicated. I remember most everything that happened. At one point he was penetrating me and it was pretty painful, being my first time and all. It wasn't unbearable but it wasn't comfortable. Upon getting home I noticed there was blood in my underwear, and I was sore for about 24 hours, but mostly around my vagina and somewhat on the inside. I don't remember him getting off. I didn't have any doubts upon leaving his house that we did any more than just penetration, but as the weekend went on, I began to become so unbelievably scared and horrified that I couldn't eat, sleep, or leave my house. After talking to him, neither of us recalls having sex and he he doesn't think he "got off", either. Basically, my period was supposed to come this week at some point (it's never been pinpointed to a day) but it didn't come. The whole week I've been nauseous, dizzy, headaches, and urinating quite frequently. And, like I said, I can hardly eat or sleep. Since Tuesday (July 7) I've taken a pregnancy test every single day and they've all been negative. I honestly have no idea what to do anymore. I practically can't live with the thought of myself becoming pregnant, and the mere thought torments me. Could I be pregnant? Would I know this early? If I were pregnant, would I miss this period? Please someone help!