I'm having heel pain from past 4 days I thought it might go on its own but the pain has been since then I experience pain as shown in the photo. I feel pain at the edge of the heel also. Couldn't attach more than 2 pics. Sometimes I feel I'm walking on some stone. when I wear flip flop very mild pain is there ,,when I leave it and walk barefoot I  experience pain . however I tried stretching the foot but no result and I have done oil massages also but no relief.  I wear a flat flip flop inside the house also. I have attached the pic of it as well. . is that the main reason for the pain??