Hi, my name is Kelli Smith and I'm 15 years old. My last period was 3 weeks and 1 day ago. My cycles are very regular and I never miss a period. On February 8th, I was with my boyfriend in the park on a snowy day. We had unprotected sex outside the bathroom and I'm scared that I'm pregnant. For the past two weeks I've been having mood swings, fatigue, nausea, tender breast, thick discharge and frequent urination. My period is due on March 2nd and was wondering if I should take a pregnancy just to be sure? What day should I take the test?