I am a college student and had unprotected sex for the whole past summer. I missed my period on Sept. 21, 2001 and I thought I was pregnant. I am now 5 days late for my period. I took a pregnancy test at the school's nurse station and the nurse told me I had negative result. I noticed that my body is changing. I am sleeping a lot, weight gaining on my hips, and I can't fit my pants. I told my boyfriend and he doesn't think I am pregnant. I have never been pregnant before. Could the test be wrong?