I cut my grass over a week ago. Since the day after I cut the grass, I have a hard painful lump under both armpits and now a knot at my left elbow. All places are painful to touch. At first I thought it was a pulled muscle because the grass was rather high and hard to cut, but I think it should have eased up by know. This is following a mystery "pulled muscle" on my knee that lasted 3 weeks to a month and ending only a couple of weeks ago. Any suggestions??