I'm 17 years old. My boyfriend and I had sex about four days ago. The first time (8-25-16) we didn't use protection. I told him to stop after a couple of minutes because I didn't feel comfortable having sex without a condom. After that, I felt very gasy and my stomach was very upset. The next day, we wanted to have sex again so we did. (Unprotected) once again I told him to stop because I was getting paranoid. He didn't cm in me in neither of the times we had sex. But I've been stressing about the thought that I could be pregnant. He was first my guy I've had sex with. It's been 3 days and I still feel the same. My period starts in 11 days. I don't know much about how I should feel after having sex but my stomach has been very upset and I feel constipated. My stomach feels bloated. He didn't cm in me or afterwards. I feel so paranoid of the thought of being pregnant. I need help. Im losing my mind. Is this how I shoul feel or am I pregnant ? I know it was wrong having unprotected sex, I feel so disgusted. I don't feel myself anymore. I feel ashamed.