Well I guess there's not alot of people out there with this problem but it sure has been a problem for me too! I've been to two differant doc's. The first one said I had a bone sur on my right heel. He gave me a cort. Injection. After that I walked out of the office like a new women. That is until a week later when the pain came back and its been getting worse. I then went to a second doctor and he told me that I was not streching it enough. He gave me anti/inf. I had to stop taking that due to gastritus(misspelled).
I spoke to a lady at chruch and she gave me a bottle of dmso.
You can go on-line to find it. It seem to work ok. My pain gets really bad sometimes, when I have been standing to much.
I have had this pain for almost a year now, and its getting to me too. The black spots in your xray may have just been a bad xray. But you do need to investgate it more. Go to another doc. Heel pain, they say is hard to cure. There are vit. You can take : c, flax oil, ginger,pancreatic enzymes and bromelain) I found these on-line. You can also use athletic tape and suport our heel(find out on-line). I am going to try taping and vit. Next myself. Must do something, pain is keeping me from life!!!!!!! Hope this helps.