I have had pain in my left knee for about 2 years, (18 year old, female). I recently went skiing and the pain flared up. Initionally I wasn't going to make an appointment at the orthopedics, but after a week the pain didn't change. Today while running up the stairs I fell and landed on my left knee, it has three small bruises (inner side) about an inch from the knee cap, although the whole area hurts, it's not all bruised... is it something I should worry about?