Yep, I was the same. It's the chemo, particularly the Taxotere which attacks the sheath around your muscles causing myalgia. Absolutely joyous condition that is on the list of side effects, but I think it is seriously underplayed because lots of people are affected by it. It seems to kick in a few weeks after the last treatment. Mine arrived literally overnight, I couldn't figure out what had happened, one day I was fine, the next it felt like I had run a marathon, up hill.
The sight of a flight of stairs would have me in tears--I could get up, but I couldn't get down. Seriously. We went on holidays and the house was two story, I had to sit on my ( burning) arse and bump down like a baby. As for trying to get up off the floor, what a performance.
The good news is it passes. Sort of. I'm now taking Femara so it's hard to tell what is responsible for the lingering misery in my legs.
My GP and I have come up with a plan; it's now about 5.30 am and I've just had a Tramadol. That will give me enough relief to go for my walk and do something at the gym, yoga this morning, before I seize up again. Ill have a neurofen with my lunch.
Once you get moving the tendons stretch a bit and you will feel better, problem is they snap back like elastic bands once you stop. Thus the business of limping and hobbling if I've been sitting, particularly in the car, for any more than a few minutes.
Don't get too wound up about dealing with this while you are having surgery. You might as well do all the shit things at once and worry about getting back to normal once you are over the worst of it. There are a few stretches that you can do in bed to try and loosen your calves and hips before you get up, get the physio to show you those and see if they help.
Good luck, Marg