I have a large (at least dime sized) red area on the end of my chin that is red, swollen, and extremely painful. Right in the center is, I can only assume, a pimple. It is swollen enough that my entire chin sticks out. The "pimple" produces some pus, not a lot, mostly scabs up. I am more concerned about how red and swollen it is. Has anyone experienced this to know if it is infected?