For the last several years (I have no idea when this started, I just began noticing it), I have had yellow, crusty
discharge coming from my
belly button. It is not continuous, but rather comes and goes every week or so. I am a very clean person and bathe/shower regularly, and I am not very overweight (5"4' at 130lbs), so I don't believe it is lint or dried sweat or anything, It smells very bad, and is sometimes so strong that I can smell it through my shirt.