Achilles tendon rupture and calf muscle

Hello everyone, I had an accident 7 weeks ago. I was trying to push a small outbuilding at my camp when i heard a loud snap from behind me and i dropped to the ground. I looked to see if the ground gave way but when i stood up i could feel something move in my calf. Doc said achilles tendon was torn 60% and damge to my calf muscle. Suggested casting for 6 weeks with foot down and another 4 at 90degrees. I am in my seventh week but am just now looking this injury up on the web. should surgery have been done? the doc told me there were no advantages but listed possible complications. i am 40yrs old but still active. Did he just write me off as over the hill and who cares? I’m really scared or rerupture and my cast is not off yet.