I had a bad case of PF several years ago, I wear orthotics in all of my shoes now. This may sound odd, but it was brought on by standing on a step ladder while cleaning porch ceiling fans at my home. Went to an ortho Doc who actually gave me shots of cortisone in both of my heels..ouch! PF is very painful and took months to get over. I hope you get to feeling better, it helps to stretch.