OK, so Yesterday I was running and I slipped and I scrapped a cuple of inches below the knee. Blood was pouring out and everything, I had it mended, but when I took a warm shower today, it started squeezing out some kind of a sticky liquid. I just cleaned it again with a disinfecting cloth, also, when I bring my leg back to do a hurdeler strech it hurts. And I have a track meet going on tommorow and don't know if I should be running. PLZ HELP!