Hi, in December i fell pretty hard on ice, my knee was swelling and i had trouble walking on it for a week or so, i iced it every day, im a college athlete so i went to the trainers and he just told me to ice it every day, ive had a limp ever since then and it hurts pretty bad. the pain went away in February and i thought that was the end, every time i tried to jog it hurt, i started a new job that requires me to run and jog, after three days of it my knee was throbbing, any thoughts on what it could be?