Help me please, I feel like farting but I didn't fart, then it started smelling bad what should I do?

I'm constipated for a week and 2 days, I started smelling someone farted in cl everybody is looking at me, I felt so uncomfortable because there was a fluid that leaked thought my , and i suddenly thought about it- is it me who farted? Until now im having this problem and im scared of going out of the house, now I'm detoxifying, which means i'm having a little bit of diarrhea. Please help me- what should I do about it, any disease or something? I'm only 14 years old