Hi I am 20 year gal. I had unprotected sex with my partner 4 days after my period ended since it was first time for both of us. It was slight sex and I took a pill 5 hrs later. But after 1 week I had my period. The bleeding was less then usual and then 15 days later I again had my period, and this time bleeding is more than usual. So is it normal? Am I pregnant??