Suggest Treatment For Shooting Pain In The Knee

Shooting pain in knee cap (can t put a finger on it). Can be sitting perfectly still, when walking, sleeping is the worst. Sleep with a pillow under my knees, only comfortable on my back, can t really move, legs need to be straight, if my right leg turns out, it s painful. Have to fall a sleep quickly I, get restless in this position. Can t really sleep on my side, sometimes I roll over early in the morning, do have a pillow between my knees, doesn t last long, not comfortsble. Comes and goes, don t know what I m doing to aggravate it. Very stiff when I stand up. Least pain when standing, walking very slow. Somedays are pretty good, get used to the pain, but sleeping is a problem, end off on the couch some nights. Taking tylenol arthritis and a tylenol pm.