Why am i getting little red bumps that turn look like hives if i scratch them too much?

they dont bother me too much during the day but at night they start to bug me, then at three in the morning and just before i wake up i wake up itching from them amd its usually one of them on my wrist or back or knee, and sometimes its a cluster of them. I dont have medical insurance but ive been to emergency rooms and all they offer me is Benadryl and zantac which is a anti histimine. But i know it isnt a food allergie because my diet haasnt changed. These bumps or insect bites whatever they are itch terribly and ive used a paste of meat tenderizer and water and it gets rid of them in a day or so but then they re appear somewhere else on me. I swear they look like bug bites but they wake me up out of my sleep in the middle of the night and close to the time when im going to wake up.,and at night a few hours before i go to sleep. I hope they re not bed bug bites because i havent seen any bedbugs and i dont have a dog so i know we dont have fleas in the house.I sleep on the couch so i hope as i said before it isnt bedbugs, my best friend thinks its dust mites or stress related breakouts.