I know this is a few years late, but I just wanted to let you know we had a similar situation, but it was for a few months every summer. Turns out there were bats in our attic, and the bat bugs will still bite you like bed bugs except they don’t really love humans so it will be infrequent and you won’t have to worry about an infestation! When you get rid of the bats, they go away eventually.
The new plague has an old name: bed bugs. They’re in all 50 states, and can be found everywhere, from airports to motels to mansions. They feed silently in the dark, and leave behind a distinctive calling card: a cluster of itchy red bites. If you believe that you’re suffering a bed bug infestation, you’ll want to take action against the bugs right away, but while you’re fighting them, you may also want to treat the bites.
While you are sleeping, bed bugs will bite using their mouthparts, commonly referred to as beaks. As they bite, they release an anticoagulant in their saliva preventing your blood from clotting. This allows them to receive a steady two- to three-minute blood meal—what they need in order to survive and reproduce. Bed bugs will not bite in defense, they will only bite for the sole purpose of feeding.
I have various skin lesions which might or might not be bed-bug bites–small, raised, sometimes red, sometimes itchy. The problem is I live right next door to a large park and get all kinds of insects in summer, may small enough to get through my window-screen. Also, I have Parkinson’s disease, and the meds I take for it can produce hives and itching as a side-effect. And, my bedding and mattress are all dark colored, so I likely would not see fecal stains or shed bed-bug skins.
To prevent bringing bed bugs to one's own home, travelers are advised to take precautions after visiting an infested site: generally, these include checking shoes on leaving the site, changing clothes in a garage before returning to their home, and putting the used clothes in a clothes dryer outside the house. When visiting a new lodging, it is advised to check the bed before taking suitcases into the sleeping area and putting the suitcase on a raised stand to make bedbugs less able to crawl in. "An extreme measure would be putting the suitcase in the tub." Clothes should be hung up or left in the suitcase, and never left on the floor.  The founder of a company dedicated to bedbug extermination said that 5% of hotel rooms he books into were infested. He advised people never to sit down on public transport; check office chairs, plane seats and hotel mattresses, and monitor and vacuum home beds once a month.
Unlike those of other insects, bed bug bites may sometimes appear in tight lines of multiple, small, red marks where multiple bed bugs have fed along an exposed area. Bed bug bites can cause itchiness. Initially, a victim may detect a slight burning sensation. The burning area then develops red bumps, known as papules or wheals (rash). In extreme cases, bites may swell dramatically or turn into blister-like skin inflammations.