How can I deal with this lump in my mouth from a lip piercing?

I’ve had a lip piercing before and I took it out only to put it back in. It was a struggle with a little bleeding. It was okay and it was sore like all fresh peircings but my Boyfriend always wants to kiss and being tired of his complaining I took it out and now I have lump in the inside of my mouth which I believe is infected scar tissue.
It’s a little too big and I’m wondering will it go down or what?