Flatulence that seems endless

I'm 17 years old, female, and it's been 28 days since I last used methamphetamine (crystal meth). I've noticed it's messed up my gut and made it hypersensitive. I can only eat eggs with rice because it doesn't ferment as much, but I really want to eat other things and I can't because it makes it worse. At first, it felt like it was just passing air through my anus. I don't smell it, but other people do. They say it could be stress or anxiety, that maybe it's all in my head, but someone told me it was real (it was one day when she was high and passing air). Now I'm constantly checking to see if I smell anything because of people's reactions. I haven't been to school for weeks because I don't even know if I smell. I don't trust my family because they don't tell me anything and they don't know about my drug use. How can I get better? I really want to go to school and go out without worrying. I smoke marijuana to calm my anxiety. Could that be hindering my recovery? I feel bad because I feel like they're making fun of me, and the fact that I can't smell it anymore makes me feel awful. Now it doesn't come out all the time, like it never ends; now it's only intermittent. Sometimes I don't smell it at all, I mean intermittently. For one or two minutes, I need help. I feel very sad and embarrassed. I hope you take this seriously and please help me.