I'm in the same boat.a few months ago we found one adult female (ugh) and no other signs. The find was shortly after hosting a visitor who came from a bad bedbug city, who took a bus from that city packed with people's luggage.
I know, you may be thinking bed bugs BUT when I wake up and take a shower, I go down stairs and get ALL my clothes on, never returning to the bedroom and nothing coming out of there (everything is clean). I go to work and end up with 3 new bites on my tummy. SO, then tonight I went to a fest in another town and noticed I had 2 new bites from today.
He went on to tell me that the weirdest bed bug story he had was when a guy on Wall Street called him and explained he was getting bites but then a month would pass without any, and then they'd resume again. This is not typical bed bug behavior. The guy didn't call for a few months and then did so again, plagued with bites.
If bites or welts are found on the body in the morning, it is sometimes assumed to be bedbugs. Several other insects, however, also bite during the night, including mosquitoes, bat bugs, mites and fleas. Many of these bites look the same, so it's still a good idea to look for bedbugs in the mattress or other clues to figure out what caused the
How to Recognize Bed Bugs. Bedbugs are tiny insects that feed on the blood of humans and animals. Bed bugs don't just live in beds, but in luggage, furniture, and even shoes. Bedbugs are not dangerous and don't typically transmit disease, though some people have allergic reactions to them or get secondary infections from scratching bites.
Pest guy came back and rechecked, no bugs found. He used tools to check cracks between basebords. Nothing found. I continued changing linens every other day, drying pillows and quilts every other day and now added vacuuming the diatomaceous earth and reapplying every week. It's been 4 weeks, no bites and no bugs in glue traps.