I lost my virginity on the 7th. I took plan b not even 24 hours after sex. He used a condom. My period was supposed to come on the 13th, which it did. It only lasted 3 days, where my other periods have lasted 5-6 days. I experienced cramping and it was a bright red blood. However, 2 days after it ended, I saw a brown colored discharge. I researched and was scared to read that that can be an early pregancy sign. I'm scared to death and just want to know if I am pregnant or not. Should I take a pregnancy test?