Hi! I was just curious, I am staying at my parents (which Ive never had an issue before) and have 21 bites on my bicep/forearm/in the bend of my arm which I noticed yesterday. They dont itch and are already losing the redness. This morning I woke up and have no new bites. My husband and son do not have bites either (they both are very sensitive to insect bites too). We checked the bed before bed last night and there were no signs of bed bugs. Is it possible that its still bed bugs???
General housecleaning measures, (e.g. vacuuming floors and surfaces), seldom reach where bed bugs hide. For this reason, repetitive vacuuming by occupants may not be worth the effort, especially compared to other important preparatory activities. Targeted vacuuming of bed bugs and infested harborages, however, can help remove some of the bugs before other treatment measures are undertaken. Bed bugs and especially the eggs can be difficult to dislodge. Optimum results will be achieved by moving and scraping the end of the suction wand along infested areas such as seams and fabric folds of beds and sofas, and the perimeter edge of wall-to-wall carpet. Bed bugs can survive the high speed trip down a vacuum, so it’s important to carefully dispose of the vacuum contents in a sealed trash bag afterwards. 
THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

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’ve been getting bites as well and I am extremely allergic. It is super itchy and now I have scars that will never go away. I am the ONLY one in my family getting bitten so no one understands my pain. I have 2 hours of sleep max at night because of both paranoia and getting bitten. I am up to the point that I cry almost every night from the pain. I’ve tried a lot of solutions, the one that is currently working for me is Vaseline. I apply several thick layers of the jelly and it stops the pain and itching. It also helped a lot with the swelling. I noticed it sped up the healing process a lot more than over-the-counter drugs that I’ve tried. I hope this helps!
First, there should be a thorough inspection of areas that may be infested to identify bedbugs. Once a room is identified as infested, don't remove anything from the room unless it is sealed in a plastic bag. Furniture and items that you want to discard rather than treat should be bagged and destroyed so other people don't use them. Call your trash collection agency to arrange for an immediate pickup. Reduce the clutter in the room and discard any cardboard boxes as they can harbor bedbugs. Vacuum the area and seal the vacuum bag in a plastic bag and discard it.

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.
×