I had OHS 5 years ago to replace my aortic valve. I had endocarditis at the time, so they couldn't repair my AA. I was 36.
I was in the ICU for 17-20 hours, hospital for 4 days. Walking up stairs at 3-4 weeks and ran a mile at 7 weeks. I couldn't drive for 5 weeks or ride my bike for 4 months....that was the worst part
It was not nearly as bad of a recovery as I thought it would be. Best thing I did was stay on a consistent schedule of pain meds so I could get up and move around. You heal so much faster that way.
best of luck!