I just stopped taking my birth control after my last period, which was July 21st, because I couldn't afford it. I had unprotected sex with my boyfriend twice after stopping the pill. According to an ovulation calendar I didn't ovulate until August 4th. One time he ejaculated inside me and the other time he pulled out but I am pretty positive some still got inside. I should be due for my period today but I'm still very scared. I've been experiencing a horrible, on-going stomach ache for about a week and a half. It feels sort of like cramps but also it feels like I'm full all the time. A few days after we had the sex the second time, I got really sick, a migraine and vomiting. My breasts are a little sore but not too bad. I'm know I won't know for sure until I miss my period but I've never had PMS cramps that felt like this. Could it be pregnancy or maybe the fact that I stopped taking birth control so my PMS will be different? Any information would be helpful!