How to cure my Body odor HELP PLEASE?

So the cause of my Body Odor is unknown for the most part but here is how things work
I wake up in the morning and I if I wipe there's feces more internally with a small bit or dry bit on the outside.
Typically I have to use the bathroom at school which I can't and when I hold it in I smell even more like feces.
I didn't have to use the bathroom at school today but the smell was still there.
My butt also sweats and when I wipe there's brown but the tissue paper doesn't have a smell but I still notice the feces aroma following me I thought it was dirt but that doesn't explain the smell.
I've recently started taking probiotics but sometimes I'll miss a day and my diet is fair I eat foods with seasoning but I've completely rid soda I still eat junk food though because I don't want to get rid of it and the smell doesn't go away so what's the problem no seems to have this one exactly.
ASK MORE QUESTIONS PLEASE sometimes I feel someones out to get me because girls attracted to me always end up smelling me every single one and Mondays are always the worst. Tweet