I had unprotected sex 7 weeks ago. 2 weeks after the sex, it seeemd like I had my period but it was lighter than usual. A week after my period, I began spotting a little bit. And for the past week or so, I've been having to pee a lot and I've been getting dizzy a lot, too. I took a pregnancy test last Sunday and the first one didn't say anything, and the second one was a negative. I've been getting kind of nauseas, and I loose my appetite easily. Right now I'm 5 days late for my period. Am I pregnant? Please help.