How long will my leg take to heal?

hi 8 weeks ago whilst in canada my left leg went down deep snow and i fell forward,for 2 weeks it was agony and i could barely walk,i rested it with ice and a support.when i got home i went to the doc who said it was a ligament,she gave me pain killers and gel to rub on,i can walk on the leg fine now but my knee feels really tight and locks if i kneel also the calf muscle really hurts if i turn my foot inwards,its also painfull when sleeping especialy if i rest my good leg on it,im still walking but when i rest it swells and really throbs.can anyone give any idea what this injury is and how long it will take to heal?i cant exercise or anything and its getting me down