Just had a Bypass, 3 months ago. Not dead yet!

Still, no significant increase in oxygen when I need it. Plus, also getting a distinct chest sternum pain.
I'm a reasonable patient man, but intolerant of BS when it assails my most sensitive nose.
Tomorrow, I see the Surgeon who took an Angle Grinder to my sternum, with an X-Ray to show how my body has repaired itself. No doubt he will join all the other Medical Experts, in proclaiming "...every thing is going well. Don't forget, your body has undergone Major Surgery. I do not expect you to recover for at least another 3 months".
Notice, still no guarantee. And for looking at the X-Ray, $100, up front if you please.
Any half-descent Mechanic will do a complete Head job and could not think about discussing money, if even one valve was not seating beautifully.
BUT, serious warning - if you do not do the exercise the Phyisio prescribes, the healing is not worth the operation.