I just lost my virginity on the 15th of July and he used a condom, it didn't break he said if it did he would of felt it. A couple of days later I started having dark brown discharge and then i started my period on the 21st of July and it was heavy the first day and the second day too and the 3rd day it was not as heavy as the 2nd day was much lighter and then on the 4th day it was completely gone is that normal? Am scared I could be pregnant??