I got my lip pierced about a month ago. The piercer only had a u shaped ring. On the inside of my lip I have had some white skin or something that appears and I could just bite it off at first and then it would go away.Today I looked at it and I had what looks like a bubble but it's hard on the bottom of the ring on the inside.

I have been rinsing out my mouth with salt water everyday when I brush my teeth twice a day. I also have been using mouthwash throughout the day mixed with water. Any ideas?