Okay, my usual menstral cycle is about 28 or 29 days, my period is always on time and a week before I get my period, my breast get sore and I start getting cramps. January 10th 2010 I got my period and had unprotected sex on the 23rd this month (february) it been over 36 days since my last period on the 15th I started bleeding but the blood was light pink and would stop after a while then would repeat, I was expirencing nasuea, headaces, pain near the sides of my stomach and a sharp sense of smell just yesterday I started to bleed more and will get cramps from time to time and still was expirencing the naseua, headaces pains and sence of smell. Could I be pregnant or could it be my period?