I've been having this occasional warm spot on my foot. It comes for about 5-10 minutes and leaves. There is no pain, and no redness. When I touch it, it doesn't feel warm. It feels the same no matter what I have on my feet whether it be tight shoes(which I don't wear often..haven't in about a month). I'm a 15 year old with...slightly poor eating habits when I can get my hands on sugar.(which isn't often. Otherwise I eat just fine.) I drink lots of liquids. I've noticed that I've been more thirsty recently, though. I've cut down on my soda intake immensely. I've been having this problem for weeks. Should I go see my doctor?