I work for Happy Feet here in FL, dealing with feet all day, yes go see a doctor. Many runners will develop a number of problems including planter fasciitis - if it was this you would feel the most pain when you wake up in the morning taking the first few steps. If it is while you are running and hurts in the balls or where the balls meet the arch area, then the metatarsal arch could be collapsing and could cause Morton's Neuroma (cause two joints to push together and pinch a nerve at the top of your foot). Take a look around Happy feet . net. I'm not spam, you can add me on facebook/myspace if you like. Hope you find some relief!
Back eating healthy goal
Started 2/6/09 @ 140.2
Started again 9/18/09 @130.6
Started JC after a breakup gain of 10lbs
Whether you think you can or you think you can't, either way, you are right! -Henry Ford
Je pense donc je suis. -Decartes