Bump On Lip Piercing What Is This Bump On My Lip? I Got It Yesterday But It Got Worse Today.?

What is this Bump on my lip? I got it yesterday but it got worse today.? - bump on lip piercing

Now you can see something white in the middle.
His often happens when I bit my lip really hard and my mother is too often, especially in winter. What is it? And how do I get rid of?