Doctor gave me an ointment to put on his head, guessed it should recede in about a week. It's already looking better after a day! Cheddar still acts like himself. Doctor confirmed that it was not a tumor. So my buddy is ok! Woot!
He thought maybe an abscess, didn't want to lance in on account that it was so close to his eye. Not sure what ointment he gave me, I was just so relieved to hear it wasn't a tumor that i was just greatful in knowing that! He was confident that Cheddar would be fine and that it wasn't something to spread to Provolone. He checked out the young one too, said he didn't have any signs of URI or anything bad. So all is well.