Pregnant?

Kaitlyn • Engaged to be Engaged
It's a week before my period (I'm on birth control) and I'm having VERY bad cramps. I've also been feeling run down, I've gained 12 pounds in the last two or three weeks, my boyfriend and I had sex on two of my ovulation days and right after I got my birth control (about three weeks in) we were having unprotected sex. I had my period on the 14th of this month, but I was wondering what some of you thought of this? I very much want to be pregnant, and at first I thought maybe I was tricking my body but everything has been going on for 2 weeks, except these bad cramps, they started today.  I've taken 3 tests but they are only 5 days before period tests and they all say not pregnant. Please help, I can't stop thinking about it.