14 dpo bleeding. could I be pregnant? HELP!?

I had july 1 (6days after my last period) and now july 19 I start bleeding. at first I thought it was my period. the first day it was about like my normal period(used 2 tampons) now its endin day 2 goin on day 3 and the bleedings really light. the first day I had crampin and the blood looked normal, now no crampin and the bloods pink/red. even if I ovulated at lastest july 5, the bleedin would have started 14 dpo. im freakin out please help!!!!! wit my first daughter I NEVER experenced any bleeding. o ive taked n several hpt all negative.HELP!