I've recently been having pain in my right knee. I haven't worked out in about a month, because I pulled my upper back. Recently out of no where I started having pain in my right knee, at the bottom of my knee, mainly around where the bones meet. I was wondering what this could most likely be caused by. I've had knee pain on and off for both knees when I was doing squats wrong. I did hit my right knee hard last year and had pain from that for a few weeks. I don't know if that has anything to do with it.