I Fell And I Suspect That I Hurt My Lateral

I fell and I suspect that I hurt my lateral meniscus. But it only hurts when I set my foot incorrectly. I walk without any pain, but the swelling under the knee would not go away, and if I walk a lot there is some discomfort in the place of a lateral meniscus. Massage helps a lot. Should I do anything else or just rest the leg and give it time?