I had a period on dec 22nd for 5days (normal) i then had u protected sex on 1st of Jan early hours and took the map on 3rd jan. I then got a 5 day heavy period exactly a week later on the 10th. My boyfriend and i had sex again on 24th of Jan, we did use a condom however afterwards it was split. He did not ejaculate as we felt the condom tear but to be on the safe side i took the map again on the 26th of Jan. I then got a normal 5 day heavy flow petiod a week later(02/02/14). My period is normally a 28 day cycle which would mean i was due it on the 2nd of March if taken from the 5 day bleed i had in feb. So far i havenot recieved my period and it is a week late. I have taken a test that had came back negative but i am worried. Is it normal for this period to be late? Thanks so much.