I'm a teen. Last month, March 16, I've got my period but is 1 week early. After my period, I had sex with my boyfriend once but we used the withdrawal method. This month, my period did not came, which I thought will arrive on April 14-16, but it did not. I had sex again on 19th but with male condom. Now my period is 10 days late, i think. What should I do? Am I pregnant?