What a pain in the Foot!!!

So yesterday morning, I woke up to my Achilles Tendon being sore. What a strange and weird thing. I can put weight on it fine, it only hurts when I walk (i.e. when I move my foot up or down). I've had the issue twice before, and can't seem to pin down exactly what's causing it. The good thing is it only lasts 3 or 4 days then goes away altogether. At least until next time. It's not like the whole back of my calf hurts. It's just the very bottom where the tendon attaches to the heal. Besides hurting when I walk, it also hurts to touch it, more of a soreness then real pain.

Doing a little searching on the net revealed that it's either Achilles Tendonitis or Peritendonitis. It's the strangest thing because everything I've read so far states it's from excess activity (that's not me), the other is from poorly padded or very flat shoe soles. The funny thing is, I've had the same shoes for a while. Now that I'm writing this down though, I'm thinking it may be my sandals. I never had the issue before I bout them, and only ocationally get it after a weekend. The only issue I have with this is that I actually walked around less with them this weekend then any other this year. Heck I walked a ton in them while on my Vegas Vacation a couple months ago without issue. This sucks too, because I really like them, as they're very comfortable. I guess I'll have to shell out some cash and get some new ones and see if I get this issue again.