Hi, two days aftr having my periods I had sedx with my boyfreind and we used a condom but I had a doubt that the condom broke so the very next day I took an i pill to be safe just in case. The problem is the very next day I strated bleeding, like a very regular period bleeding and not just a spot here and there kind  bleeding, which continued in the same flow till next monday and then it reduced to spotting. In the meantime which is around tuesday next week I visited a Gynoloegist and got my ultra sound sound done which showed everything just fine with me system meaning I was NOT pregnant and doctor assured me that the bleeding is almost about to be over and around it did stop for two daysi.e. friday and saturday.. But to the worst of my nightmares come saturday night it all started again, again a very normal period like bleeding not just spotting.As on today  I am  in the third week now and though bleeding has changed into spotting but its still there and this is really FREAKING  me out.

 Somebody please suggest what is wrong with me. Can it be that I am pergnant and ultra sound could not detect it or is it something else. This is frying my brain so please help.