Piercing help !

I got my belly button pierced about 2 1/2 months ago and it was fine. I bumped it on my desk at school a few times and a bubble formed inside my belly button under the hole. I went to the doctor a couple weeks ago because it was so sore I couldn't sit down and she told me it was a build up of tissue and I might need to remove my ring and get the bubble burnt off. I have since been soaking my piercing in antibacterial cream in hopes that I won't have to remove the ring and the bubble has gotten smaller but isn't gone. If anyone could give some advice on what I should do. Thank you ❤️💙