Hi - I'm so sorry to hear this - but you'll heal quickly! Many people are either allergic to or intolerant of codeine. I can't take it. If you alert your doc to the fact that it is making you sick to your stomach, he can prescribe any number of other options that will help without making you nauseous, crampy, etc.
I had a green/spiral fracture of my left tibia when I was about 25 - was playing frisbee and landed just wrong. But they didn't put me in any casr because I also have a high pain threshold, and didn't go to have it xrayed until about 2 months later, when it wasn't feeling better. At that point, the doc said it was already past the point of trying to "fix"it, and I should just take it easy for a couple of months - so I bought a 3 month bus pass and travelled all over the US, visiting friends and relatives and sightseeing and hiking ... haha - I was what docs and nurses now call "non-compliant"!
When I blew out my left knee in '99, I was walking down some stone steps in a garden in November - covered in leaves, rainy, dark... and, like you, all of a sudden I was in a heap, and my left knee was history! Had to have it rebuilt - he said I'd need a new knee by 2010... so far, his work is holding strong. All the docs, therapists and nurse practitioners all recommended taking glucosamine/chondroitin/msm to help heal the knee, grow/strengthen the cartilage, and reduce swelling. I think it helped a lot.
Take care! Healing vibes to you!