Hi, i'm 22 and have been on birth control for about 3 years.. In the past couple of months i've been not taking the pill regularly (each time of day is different) but I havent had sex so it really hasn't bothered me. The beginning of this month I forgot 3 pills in the first week, which was every other day I forgot them and I never took them to make up for it. About a week and a half ago, I had sex w/o protection and he did ejaculate in me... I know how stupid that was. I was suppose to get my period on sunday, but I haven't yet and it's tuesday night. Today it started where I got bad stomach pains, but not like cramps from a normal period. I kind of have some chest pains also. I took a pregnancy test and it said I wasnt pregnant, but I think I did it wrong. It says you should have the urine inside of you for 4 hours and not drink tons of water and then take it cause there might not be enough hormone in your urine to make the test positive. I'm really nervous and don't know if i'm pregnant.. Do you know if I could be with all the scenarios I told you? And how good is the chance that I am? Please help!!!!!!