Hi, 2 1/2 weeks ago i had un-protected sex. I was 4 days into my period (my period normally lasts 5-7 days) so i took noithisterone to stop me from bleeding for the night. I took 3 spread out in the day. So i wouldnt be bleeding. I didnt come on for 3 days after that,then had a light bleed for 2 days.Im due on in a week...but today all of a sudden i got a pressur pain, like i was going to get piles. The only time i have had this is when i was pregnant with my son. Im Just wondering if its possible i am pregnant?