We apparently have insects of some sort in our condo, judging by the half dozen bites/stings I've gotten over the past month. The bites seem to happen at night, are mostly on my legs, and result in very long-lasting, huge welts that are unlike anything I've ever experienced before. OTOH, my husband apparently hasn't had any such bites, and there are no other signs of insects anywhere - not in the bedding or furniture or plants. Further, we haven't traveled anyplace in a few years so bed bugs seem very unlikely. Any ideas as to the next steps to take?