Good for you.. Hope it all goes well
If you can, find something like this
http://www.breg.com/products/cold-th...e-cold-therapy
A cooler -filled with ice-then fill it with water.
with a motor-it will ciruclate water for many hours over your knee.
GREAT COLD RELIEF THAT CUTS DOWN ON PAIN AND SWELLING.
It was great after being on my feet teaching all day.
Rest. Rest.
use drugs only if you need it.