Midiowa,
I'm just a little ahead of you on the surgery (Feb 1) I found a combination of things worked, that way I wasn't stuck on just one medication. I take one 10 mg Oxycontin in the morning with a Celebrex. Mid afternoon I take one 50 mg Tramadol with 1/2 OxyIR.
Then, at night I take 1 tramadol and 1/2 OxyIR again. It's important to make sure you're still able to have a bowel movement, or that will cause additional pain. I make sure I take a stool softener 3 times a day, and I've been using the Metamucil, and eating prunes several times a day. So far, it's been working. Either way, there's lots of different ways to keep your pain levels down. If they're down you'll be able to move around better and that will help the healing process. Hopefully your doctor is receptive to working out a plan for you that works. Some doctors aren't so flexible.
Good luck.