Had sex for the first time October 22, he used a condom an did not ejaculate. October 23 I started having stomach pain and thought it was just pain because it was my first time. Then a week later I had my period (brownish/reddish light flow, 9 days) But ever since then I've had SEVER stomach cramps. In bloated and I have pain above my belly button and around. My stomach keeps growling even tho I'm not hungry when I press on my stomach I tend to get gassy, I'm constipated and have diarrhea. My lower back hurts and I get chest pains every now and then. Sorry for too much info but is there a possibility I can be pregnant? Sometimes pain gets really severe and I feel like crying. Yes I'm under 18 and I know sex at a young age is bad.