Bleeding from Belly Button 3 Years Post-op

You should see your plastic surgeon (if possible) or another ABPS-certified plastic surgeon who can assess this concern. This likely is caused by a "permanent" suture that has eroded through the inside of the thin umbilical skin, causing the bleeding you notice. Unfortunately, this opening to the outside means that the retained suture material has also come into contact with external bacteria, keeping this area from healing, and perhaps contributing to your other symptoms. These are important additional symptoms, and should be evaluated by your plastic surgeon (who ideally is fully trained in general surgery as well), or perhaps a general surgeon in consultation with your plastic surgery specialist.

Please do not ignore this hoping it will "go away" on its own! Good luck!

It is not normal to have bleeding three years postop.

You should see a plastic surgeon to assess the problem.  Hopefully it is just a sequestrum, or retained suture, for which an umbilicoplasty would be performed.

Bleeding in the belly button three years after tummy tuck may indicate a contaminated suture which has formed a suture abscess. Unlike a dissolving suture, the permanent suture will hold bacteria and inflammation and will need attention from your doctor.
Best of luck,
peterejohnsonmd