Suggest Remedy For Pain In The Knee Post Injury

I am an athlete and I usually have pain after playing hard that lasts a day or two. About three weeks ago, I dove in a softball drill and landed on my knee wrong. I have continuously felt pain in my right knee from the drill; especially under my kneecap. And I feel pain when I lift my leg, jogging and going up stairs. I have often iced, wrapped, and elevated it and the pain still is bothersome. Do I need to set up an appointment?