I have a body odor problem...but I don't sweat that much and I wear a lot of deodorant?

Can anyone suggest where this odor could be coming from, because I know for a fact that it isn't my underarms. I shower every morning before school, use body wash, shampoo, some soap, everything. Heck, I've even resorted to using talcum powder on my rear end because I think the smell may be coming from there, but this is only making the problem worse. I know this question comes across as funny, I understand, but its really a very embarrassing problem, and I've overheard a few people complaining about the smell. And please don't say wipe better or clean my butt...because I do that. I've even used this anti sweat liquid stuff my doctor gave me (it hasn't worked). Please help me

(Im a 17 year old male btw)

Thanks