Necro, keep an eye on that.
My uncle dropped his motorcyle at a very low speed once. Exhaust fell on his leg. Nothing broken, but unbelievably painful. Looked a lot like that.
He ended up going to the doc a few weeks later for a cold, and as he was walking out, he mentioned his leg in passing. Turns out the under the skin it had become infected. They rushed him to the ER and scooped a bunch of foul shit out to the point where he had a golf-ball sized hole in his leg that had to be filled and packed every day for a good while. Had he not mentioned it in passing, there's a good chance he could have lost it, per the doc.