Hi Govind singh, First of all dont feel nervous Now a days everything is treatable in orthipaedics, Coming to your problem your knee problem is looking like some weakness in your cartilage of the knee. it is common in runners and other persons who lift heavh weight. Please get evaluated properly by consulting an orthopaedic surgeon. You might need some x rays and blood investigations to confirm the diagnosis. once confirmed the disease is treatable. you should take medications, exercise and life style modifications to get cured of disease.
Next Steps
avoid lifting weights , running
Health Tips
proper knee support, good warm up before starting exercise