dude, what boots do you have? this exact thing happened to me last spring. . It'd never happened before, but I was breaking in a new pair of boots at the end of last year, and one day I came home and my entire front big tow was bloody under the nail. I just assumed it was because I overshot a couple of landings that day. But it was weird. And honestly, I left it to heal, and I lost the entire nail. It still isn't completely back to normal and its 10 months later. I thought it could be because my nail was a little too long that day. but I wasn't sure if that was it or why exactly it happened. Its sucks dude. good luck with it. It was annoying this summer cause whenever I went water skiing or wakeboarding everyone thought I had toe fungus. if anyone knows why it does this, or how to avoid it. . let me know.