I had sex for the first time (and only once) almost 6 weeks ago. We used a condom and afterwards checked to make sure it worked. I was also on the first day of my period. Now I'm 12 days late and scared. My boobs just started getting sore, and I've felt some cramps in my lower stomach this week along with increased gas this last month. I never really kept track of my periods before and don't know if I'm regular but my last one came in less than 3 weeks. I'd take a test but I'm scared to death and don't want to do it alone.