@ehBeth,
Okay, now that I've realized that it's quite natural to say like that,
I'll practice that expression with no hesitation.
What the patient said, "I've been treated well enough.' is frankly
what I made up. I expected it to sound natural, but it didn't
as you said it's 'a bit off', which I think means 'a bit weird or strange'.
I surely need to study English harder.
Thank you ehBeth for correcting my mistake.
Have a happy Sunday!