Hi! I have a hard painless bump at the base of my achilles. I m a regular runner logging over 30miles per week. The bump looks like a bony protrusion at the back of the heel. It doesn t hurt at all, but I m kinda worried it might be the beginning of something bad. Another thing, both my achilles tendons have lately felt somewhat sore and stiff. Been doing regular stretching routine for calf muscles and otherwise. So I am really bummed out about the sudden appearance of the bump.