There is some brown liquid coming out of my belly on and it smells really bad. Help!!?

So a few days ago i noticed that my belly on started excreting some kind of weird brown liquid and it smells HORRIBLE!!! like i take a shower every day and wash that area with soap but after a while that brown liquid in my belly on just starts to reappear. Like i can smell it when i am walking places and i want to get rid of this as fast as i can. So anyone got any ideas?