I had unprotected sex 2 weeks before my period. This month period has been different from my other periods never had happend to me. I've had my period normal and exactly every 31 day. I have to babies. In the month of December I had unprotected sex on the 25 th and.I started my period 2 days earlier the 10th of January when I normally get it on the 12 or 13th. It also has been lighter and shorter than usual its been only for 2 days when usualy lasts from 5-7 days. Is there any posibility I can be pregnat?