Well if the OP is going to thread necro then I guess its safe to jump in.
I had the EXACT same thing happen to me with the same results.
I still cant cheer loudly watching my friends fight :(
A Judo friend of mine also had it happen to him. I've been trying to work my voice back to its original range, but not much success. A voice coach would probably help, but I don't care THAT much!