Can that mean im pregnant 10points ?

In either feb or early march cant remember i had sex for the first time i bleed after the deed for lk 2 day but realy light the condom?had broke but we noticed pretty early n he did ejackuate but in april i had some light bleeding during the time i usally have my period but nothing big i took 4 pregnancy test just to make sure 3 outta ten said not but one said yes n i still have not had my period why am i not having a heavy/ no period if test said no ??? plzz help!