G day....I developed a mysterious pain in my left heel after a 9 hr. flight, then a connecting 1 hr. flight to my home city. I don t recall hitting it on anything, twisting it in any fashion, or the like - no cause whatsoever; this just started hurting as I began walking to the front of the plane at the end of this final flight. Now, about 20 hours later, it s still as painful as at the beginning...... any suggestions to relieve the pain- not just temporarily? Thank you. KJ