I have been advised to do a meniscus repair surgery for my painful knee. Should I go for it or not?

I am a 39 year old man, 5 '- 7" tall and 78 kg weight. I used to experience a locking effect whenever I extended my right knee from a crossed legged( yoga) position since a year ago. After trying several moves it would feel ok and once ok it would function normally. Recently in a bid to loose my weight I began brisk walking and running. After a months session I developed stiffness at the back of my knee and pain at the junction between the femur and the tibia on the inner side of the right knee. An MRI was advised and the report suggested torn meniscus. I have been advised by my doctor to undergo surgery. Can anyone who have been through this advise me if I should go ahead? Can medication heal torn meniscus?Can I postpone the surgery if necessary? If yes? for how long and does surgery cure it 100%. Thanks.