Members who have had by-pass surgery.

My father had a quad bypass in his mid-60s, and probably took about 7-9 months to fully recover. He was a good boy and followed doctor's orders about eating, smoking (he quit) and exercising, even walking every day a week or less after the operation, even though he said his leg hurt. (He had more pain in the leg where the vein had been taken from than he did in the chest, interestingly.) The surgery was probably the best thing he ever did, and he continued with an exercise regimen for years afterward.
He always thought he would die in his 60s, but he lived almost to 91, and the bypass never had to be repeated or "fixed." :)
Best of luck to you - I hope your results are at least as good as his were!