Ksig . . .
You might be over training, do you take significant time off from running? That impact can be a bitch. Try taking glucosamine and chondroitin as a preventative. Do like double the dose for a few weeks, it takes a few weeks to kick in.
Most things go away with some serious rest.
You also might want to see someone who does ART.
www.activerelease.com they are now the official healers for the Ironman competitions.