How bad is it?

So yesterday I tweaked my knee pretty good. As soon as I got in the boat, and since then, I've been keeping it up and icing it quite a bit. I'm trying to figure out what the specific injury is and how to be back on the water as soon as possible (I have birthday plans for the river next weekend, and I'm going on vacation to the Delta right afterward). I think I sprained my MCL, and may have gotten my meniscus, ACL, or PCL a little bit too. It never really swelled up at all. I can walk, but if I move my knee inward it hurts pretty bad. Has anyone else had a spain similar to this? Should I get it checked out even though I don't think it's super bad?(probably just tell me to stop wakeboarding for a few weeks) On the other hand, if I did really tear something, how will I know? How fast can I recover? (is next weekend realistic?)