It's likely a strain.
Get it moving as much as possible (without pain), self massages are great, and probably some heat if there's no swelling.
If you're not taking fish oil you should be taking it to help limit inflammatin and help with the healing process.
After it starts getting better, start doing light eccentrics and progressively move into heavier work and concentrics afterwards.
Last edited by Steven Low; 01-02-2010 at 08:48 AM.