Wrecked13,
If it is a sprained MCL...
How long ago did this happen?
Do you still get pain daily?
You should ice it after activities for 10-15 minutes.
To rehab this area I would start you with some basic sidelying Hip adduction and abduction exercises.
First lye on the non injured side, completely on your side. With your injured leg, raise it towards the ceiling (12-18 inches), about 20 times. If you are truely on your side, your leg should go up and not forward at all!. Work up to 3 sets. Keep your knee straight while doing this. This muscle you are working will help decrease the risk of loads on the MCL.
Next, lye on the injured side. With your knee stright, raise your leg towards the ceiling? Does this cause pain? How much on a scale of 1-10?
Work up to 3 sets of 20 reps without pain.
Do these every other day. When you can do them all sets and reps for 3 consecutive workouts without increased pain, get back to me and I'll progress you.
If anything hurts, STOP, or do less, and get back to me.
Avoid movements such as a planted foot and twisting the knee. This will take some stress off your knee and allow it to heel.
Keep in touch and if you know anyone else dealing with something, spread the word...
~J