Injured?

I think I might be injured. During the last three weeks of marathon training I had some pain where my leg muscles attach to my core. In fact, I couldn't stand on my left leg and wash my right foot or put on a sock. It hurt too much and I couldn't support my weight. But it didn't really bother me when I ran, so no  problem. Well, I ran on Sunday. I pushed Levi in the stroller. Apparently I am too weak for that. I ran home from work today and the injury was worse. Is this a mild sports hernia? Whatever the case, it is clear that not running was the cause of the injury.