Gathering wood from the roadside, I slipped and fell, smashing my thumbnail between a huge section of hardwood trunk, and a heavy section in my hand. It's now dark blue, as was the air at the moment of impact on my thumbnail. Anyone have any advice? It's throbbing like I wouldn't like to describe in a family chat room, and I know it's going to be dropping off for sure. should I poke a tiny hole in the nail as I've been advised, or are there any other things I ought to be doing? Thanks in advance. P.S., I think I scared a brace of Mormons, who were cycling past at the time, as their speed increased dramatically after the first salvo of Gaelic swear words.