Jolt, it may well be the adductors, Right now my left groin is on fire and I am also having neck/head pain, along with some hip/sitz bone stuff. All on the left. I rode to W. Concord to do errands this morning on my hybrid. Just the 12 mile rt made me feel like kicking my bike and getting fat and lazy.
Since I have had MRIs of everything and all they show is a little degeneration, sort of normal for my age and activity level, I have got to do something. I've been doing all of the exercises she had me do last year, stretching, the roller, but the more I do, the worse it gets.