For one, my period is about a week late. My fiance and I had unprotected sex around the beginning of October. I have been getting headaches, as well as back and neck aches. The only nausea I feel is slight car sickness and I never get car sick. My nipples are also a little tender. I have yet to take a home pregnancy because I am hoping that maybe my period will show up. My period has never been late before. I have a test though I was just wanting some back up to my suspicions.