I met with an accident twice since last year as I was learning how to ride a scooty properly that time. I got internal injuries in my knees(as I felt) but in my X-ray report nothing was seen. But with the passage of time I feel contraction in my knees and crackling sound too. I cannot bear the cold weather or air from air conditioners as my knees starts paining badly. What to do ? Will it take time to heal itself or am i suppose to see a doctor again ??