I did a crazy thing by having unprotected sex....now my stomach is feeling crazy. I attend college and I had lab we had to dissect a pig and I couldn't take the smell i threw up. The thing is I love dissecting animals and the smell usually doesn't bother me. I want to eat food but when I get it it's like i don't want it anymore. Sometimes I can't tell if I am hungry or it's just my cycle. What's going on? Another thing is I sometimes I smoke blacks and it doesn't bother me but my friend smoked one around me and my stomach went crazy. Sometimes during the day it feels like I have to throw up but it doesn't come up so I just stick my finger down my throat and I just make it come up. This morning I woke up with lower back pains. Can someone please tell me whats going on with me?