Green means go (to the doctor)

Sometime during the week before last, maybe starting wednesday 10/29 but definitely no later than Thursday 10/30, I had what felt like an ingrown fingernail on my left index finger. I hadn't recently cut my nails, nor had I recently injured my finger in any other way, so it was a bit strange. I figured that, no matter what happened, I'd at least be able to bring it up to my doctor on Monday 11/3 because my annual exam was that day. But it kept getting worse, with no relief in sight.

( Cut for nasty pictures and gory details... )