Hello, my name is Chet. I'm a 22 yr old male. I have a pain behind my right ear and upon feeling (thinking it may be a stress headache) I discovered a painful round lump under the skin. I can't see back there, of course, but it doesn't feel like a pimple or anything like that. As I stated, it is small (maybe the size of a grape, maybe a little bigger) hard, and painful (both aches and is sore to the touch). Is this something I should leave work for and seek medical attention right away or can it wait?