I got my belly pierced 4 weeks ago, it has been infected but is much better now. My doctor said use antibiotics, they just ran out, and now there is a red bump growing, it doesn't hurt, no pus, it won't pop?
I really don't want to have to take it out!
What should I do?

It's very possible it's just some keloid scarring. That happens quite often with body piercings. Have a look on Wikipedia or Google images to compare?

If you're really concerned about it, or you think it may be getting infected again, you should consult your doctor.

I have had that on mine before, all that I done was kept cleaning it again, I used salt water and also sterile water if you can get hold of that, and finally it went hope this help.