If you don't do painkillers, drink a beer or three and sit on an ice pack. The antibiotics should kick in before long.
I took a Vicodin, and it's working, but for crying out loud, this is painful. On a side note, it's a swollen, red lump that's slowing spreading toward my lower back.
I've been on antibiotics since about 2p EST today, so I hope they start kicking in, if in fact, it is an infection.