On a regular basis 2-3X per week, my right ankle, just above my heel will get kinda stiff and painful, but I can do a calf stretch, hear my ankle "pop" and the pain goes away. Sorta like a chiropractic manupulation of the back but right near my achilles. Should I be concerned? This has happened during a change over and I had to wait until my ankle popped before I could continue to play. Happens a lot at night. I have not seen a MD about this, but it has been going on for about a year. Anyone else have this happen?