I am on birth control and my period is so light you can't even tell I'm having one. But on the first day of my placebo pills I was about to have unprotected sex so he literally put it in once and that's it. So I was super paranoid after that and tool a plan b. I got my regular period but if was short. Now it's been almost two weeks and my next period is supposed to come on Wednesday but my lower stomach is huge. Idk if its because I eat bad but every time I eat I feel so bloated I've just been bloated to the point of being uncomfortable. So I took about three different test last week and they all said negative. So is there a chance that I'm pregnant?