Injury

As some of you know, I have been playing volleyball with a team. The other day we were practicing and I moved fast to pass a ball and POP went something in my calf. From what i've read on line I believe i have a partial calf tear. What a bummer. I have a tournament in a week and a day and sooooo hoping I can play! I didn't stretch when I got to practice and I was wearing different shoes than normal. (I've read that can be a problem) I've also had a knot in my calf for a couple of days previous to this injury and shinsplints. Anyway... :(