I just went to a podiatrist and he said I have calcification

I just went to a podiatrist and he said I have calcification around the heel spur. I'm in so much pain. I am doing the frozen water bottle rolling, tennis ball rolling, the stretches in the AM & throughout the day and nothing seems to be easing it. The doctor wants me to have physical therapy for 3 months and if that doesn't work, he would give me a shot of Cortisone. I may be able to get a shot through a different doctor. Has that helped anyone?