You got your belly button pierced like 3 months ago and you just looked under the bottom ball and there is a red thing it looks kind of like flesh its not pushing or hurting you dont know what to do?

What you have is a Hypertrophic Reaction (this is a reaction to an irritant) generally due to the misuse of cleaning or healing agents. Irrigate the area with lots of clean running water and cease using anything else on the piercing for cleaning other than just water. The bump will dry up over the next 5 to 7 days, once the bump is gone (it may take a week or longer to make the bump go away), rinse your piercing under running water only and the bump will stay away.