mystery bug bites

I woke up with these two unbearably itchy bug bites on my forearm on Tuesday morning. Later in the day they developed these weird blisters in the center of each bite. Hard to see in the picture, but there's a large reddish swollen area surrounding the smaller red bites and blisters. I was sure we had bed bugs and were doomed, but after cleaning psychotically, reading bed bug info on the internets for hours, and suffering no further bites (yet), I think I may have jumped to a wrong conclusion. I hope.

Done