My guess is that the pain is not something serious. Probably you can try come streching that helps to strengthen that part of the body. But consult a professional to be on the safe side.
I have signed up for my first F.M. The race date is 12/09. My target time is between 4 and 4.5 hours.
I ran 12 miles yesterday. It was a good run for the temperature is from 50s to 60s this weekend, quite unusual in this season here.