Getting Bitten in New Home?

I think I'm becoming paranoid. We moved to our previous house and I had been there two years before I started having itchy problems. At first I thought the usual, fleas, spiders, or mosquitos. But as months went by my kids started to show bites as well. We didn't have bed bugs. We had the house looked at and at the time all of our pets were on flea treatment and had been washed. So why the bites? I did the usual clean and bag everything. Super heated the clothes in the dryer multiple times. Bleach everything. Wash, wash wash. Eventually I started salting my carpets and bleach spraying them and my couch and beds. It went away.

We just moved to a new house where I'm now being bitten again. Again, no fleas, wood floors this time and no carpet at all. We did buy new rugs from the store. The house was treated for bed bugs. No one lived in the house and all carpets had been pulled up and gotten rid of before treatment. Treatment was 4 weeks, but like I said there were no couches or carpets, rugs or anything, but curtains which we threw out, but were sprayed on anyway. So what the heck is it? I don't see an actual bite mark other than a big red spot. My skin is raw from itching and it's clearly puffy and hot under the skin and around the bite. I just don't know what I'm look for anymore or what to do. Any ideas?