on the bottom of my left foot, it feels like near the base of my second metatarsel, i have some pain. it's been bothering me for at least a few weeks now, but it's not excruciating. i can still run/race fine i think, i PRed in the 3k the other day, and went for a pretty brisk 70 minute run today, and i didn't really notice the pain. i also have some pain on the inside of my foot, like where a bunion would be. also, it seems like that area that i have been describing might be a little swolen. could this be a stress fracture?