Ouch! Multiple stings are painful. There's a type here that builds a multi-storied nest under old tree stumps. Those paper nests are the neatest wasp nests I've ever seen. They have to do a lot of work to excavate the hollow and then build those stacks of nests. I got stung big time the first time I flipped out an old stump because I got a glimpse of that nest. I wanted a closer look, but the wasps didn't much like it. In the end I collected the nest and kept for a long time. It had five tiers and had really graceful architecture. Hope the stings go away soon.