Hi. My seven year old daughter lost a tooth in the front bottom of her mouth. She wasn't brushing the area well because of the hole so I encouraged her to brush the area better. It looked like a cut developed under where the tooth started coming in. I forgot about it and she didn't mention it was still there. However three weeks or so later, the new tooth is halfway in and she still has the bubble below the tooth and its sore to the touch. Not sure if she just keeps inflaming by brushing or something worse.
It's not red. Pink gums with a slightly white/clear small bubbles. Breath bad.