Visit your doctor. You can also see a doctor for diagnosis if you do not find signs of bedbugs in your bed and cannot identify the source of the bites or rash. However, there is a very good chance that your physician will not be able to firmly diagnose that you have been bitten by a bedbug because the symptoms look so similar to those that result from other insect bites and skin conditions. Nevertheless, you may feel comforted by going to see your doctor, who can confirm for you that bedbugs pose little physical threat to humans.
Bed bugs occur around the world.[36] Before the 1950s about 30% of houses in the United States had bedbugs.[2] Rates of infestations in developed countries, while decreasing from the 1930s to the 1980s, have increased dramatically since the 1980s.[3][4][36] Before the 1980s they were common in the developing world but rare in the developed world.[4] The increase in the developed world may have been caused by increased international travel, resistance to insecticides, and the use of new pest-control methods that do not affect bed bugs.[37]

Medical treatment is usually not needed for bedbug bites. If required, medical treatment is aimed at relieving the symptoms (like itching) caused by bedbug bites. In the rare cases of a systemic allergic reaction or a secondary skin infection, evaluation by a health care professional may be necessary. Individuals may also want to seek medical care if they are unsure of what is causing their skin lesions.

Well I had my house tented for bed bugs. It cost me $2600. My home is about 2000 sq ft. They said it wasn’t necessary to wash anything unlike some of the other treatments. It is more than worth it to me as long as it works. I haven’t stayed in my house for over a week now. I’m still itching, but no new bites. Is that common, to still itch for so long afterwards? I just don’t feel comfy/cozy at home any more. I don’t want to be here. I’m seriously thinking of selling or renting my home and moving out. I’ll keep you posted as to whether it worked or not as soon as I can start staying home again.

Jump up ^ John Southall. "That soon after the Fire of London, in some of the new-built Houses they were observ'd to appear, and were never noted to have been seen in the old, tho' they were then so few, as to be little taken notice of; yet as they were only seen in Firr-Timber, 'twas conjectured they were then first brought to England in them; of which most of the new Houses were partly built, instead of the good Oak destroy'd in the old". A Treatise of Buggs [sic], pp. 16–17. Retrieved 1 December 2016.
I need some really serious advice. I’m presently staying in a shelter because of abusive situation. It’s only been two days but I am COVERED in bed bug bites. The shelter refuses to move me to another bed because of limited space they said. I have taken oral and topical medications. The thing is it keeps getting worse and worse because every night I have to sleep in the same bed.
Very worry about my daughter.Wnt on a trip to Georgia and south Carolina 13 days ago.As soon and we came back started having rash wrist and forearmas.Vry itchy.Have been extending to legs ,shoulder bladdes and upper arms.Doctors not sure if a bed bus bite or scabies.My grandsone have a few bites but it seems to get better.Thest rest of the group seems to be ok.
 Adult bed bugs are about 3/16” long and reddish-brown, with oval-shaped, flattened bodies. They are sometimes mistaken for ticks, cockroaches, carpet beetles or other household insects. The immature bed bugs (nymphs) resemble the adults, but are smaller and lighter in color. Bed bugs do not fly, and they don’t jump like fleas do ― but they can crawl rapidly over floors, walls, ceilings and other surfaces. Adult females lay their eggs in secluded places, depositing 1, 2 or more eggs per day, potentially hundreds during their lifetime. The eggs are tiny (about the size of a dust spec), whitish and hard to see without magnification, especially on light-colored surfaces. When first laid, the eggs are sticky, causing them to adhere to surfaces. At room temperatures, bed bug eggs hatch in about a week. Newly emerged nymphs are straw-colored and no bigger than a pinhead.
Bed bugs will also succumb to cold temperatures below 32°F, but the freezing temperatures must be maintained for a longer period (e.g., one to two weeks). Consequently, heating tends to be a better option throughout much of the country. Efforts to rid entire dwellings of bed bugs by raising or lowering the thermostat will be unsuccessful, although pest control firms are able to achieve lethal temperatures with supplemental heaters (see the subsequent section entitled "Heat Treatments" for more details). 
WE have been dealing with these pests for over a month now! WE are covered with welts and itch continuously. I tried bathing in shaving cream and get some relief. the shaving cream has a disinfectant in it that purifies the skins and relieves itching for several hours. I still find a stray bed bug every now and then but we have almost got the problem solved.
The size of bed bug bites varies with a number of different factors. Bed bugs inject an anti-coagulant along with their saliva when they pierce the skin to take a blood meal. This anti-coagulant is mostly responsible for how a person reacts to the bite and determines the size of the bug’s bite. Since people will have various sensitivities to the bed bug’s bite, the size of the bite will vary, as well. Another factor that influences the size of a bed bug reaction is the number of times a person is bitten. Bite reactions of people bitten many times are also variable, and their response may be either more or less intense as the number of bites increases.