I had sex the day i started my period and he came inside of me. That was the 15th of may. The next day my period had stopped. It isnt normal for my period to last such a short time.I usually last anywhere from 7 to 9 days. On the 31st i woke up with lite pink blood on my panties. I thought I was guna start my period again but it never kept bleeding. Could i be prego?