That sounds just like them, rockhillmanor, except they have left two pustular thingies on my feet. Butterscotch has several on her tummy now.
A friend down the road also suggested clorox. He said not to saturate the skin, but to just dab a bit on the bite. It apparently neutralizes the toxin because he said it will not result in the pus bump and takes the itch away. I had been afraid to try that on Butterscotch, but he has three schnauzers he loves dearly and he said it doesn't hurt the dogs. The key is to just dab it and not spray it or anything.
I think we are past that point with the dog. She still seems to be doing fine and her tummy looks better, but still not normal.
Dale