My period ended July 8th. I had unprotected sex july 12th, i took a plan b pill about an hour after. July 18th I started bleeding, but I dont think it was my period because it only last 3 days when usually its a whole week & I had just had it 10 days before. Also the blood was very brownish in color instead of red. Its now August 2nd & for the past week my stomach has been cramping and feeling very bloated. I have a lot of white/clear discharge as well. Also I've been experienced mood swings. Thought I havent vomited, I have been getting headaches. Could I be pregnant?? Or does the symptoms usually last this long..