My surgery is on the 30th. Until about six weeks ago -- I was walking in a pool several times per week for exercise and to strengthen my legs. I had been doing it for about 3 months and was feeling great. Out of nowhere - I started to go downhill quickly. I can barely walk at times and steps are so painful I don't want to leave the house some days. I am concerned my lack of activity is causing the calf and thigh pain I have now. It feels something like a cramp. It is quite bothersome and keeps me from getting good sleep. I am exhausted at times. Does anybody else have these pains? I am giving myself guilt that it is probably my inactivity. I do some stretching and that's about it. I did just read the Bone Smart Philosophy on post op activity and I am very impressed. With a few weeks to go yet, at the moment, my concern is pre-op activity. Is it OK to limit yourself to avoid the horrid pain of bone on bone?