Ron,
You stopped your pain meds? Aren't you just like 4 days post op? I'm not thinking that's a good idea because if you let the pain get ahead of you it will be a really bad time. Did you talk with your doctor about stopping this quick? Pain is not conducive to healing Ron and your are not near out of the woods as far as that's concerned. Also when you do your rehab exercises the pain will increase and you won't be able to do your extensions and flexions if your hurting. Please let us know how your getting along. We'll be here for you.
Blessings and Prayers.
Nancyo