limited mobility

I need back surgery, so 1st I went to a pain study, parked 3 1/2 miles from the place while walking I was thinking this is good I had my cane with me, well I overdid it hadt to go to the hospital by the time I got home I count walk without the cane or put pressure on the whole right side of my body now my back is gotten worse and surgery is a deffinant. i dont know my limits yet i tend to push myself to much but always im in motion but need to learn my limits thats my problem.