Monroe piercing infected :(?

I've had my monroe pierced for a while, 2 years. It's never been an issue but I woke up this morning with a fat lip. It's pretty sore, and it's hard inside like scar tissue or liquid build up? I have no idea, but I took the jewelry out and put it in hydrogen peroxide because that's all I really have. Gargled with salt water. I plan on going to a piercing place and asking soon (the place I got it done at is no longer open). Any other advice though? I just really want to be able to put my jewelry back in and not look I've been punched in the face. :P