Sorry to hear about your stings, jbug. Hope it clears up soon.
I was bit in four places today by a horsefly! I was attacked by them last year too. I don't do well with bug bites. I swell up (two are huge already, one is the size of the bottom of a glass) and they take forever to heal.
I usually have compassion for bugs, opting to turn them over when they are belly up, or catching them and bringing them outside. But I have declared war on these meanies.