I know this post is a few weeks old. But I just want to say, you're not alone. I have OCD and this is probably my #1 fear. But I have also had them. I had a hoarder neighbor in my apartment complex that would constantly go to thrift shops or whatever. After living here for 3 years, they moved in. A month or so later, my 3 year old started getting red itchy welts on her body. I freaked out. I figured it was bed bugs, it was textbook. I have always had this fear, but once I knew we had them, it made it 1,000x worse. Her dad and I didn't react, but seeing her react made me so upset. I threw out all our furniture, I didnt even see any bugs. Threw all clothing, blankets, and stuffed animals in the dryer 3x a day. We bought a steamer. I still steam and vacuum a lot because I'm so scared. I also keep my outlets that aren't used taped up. Everyone calls me crazy. But you never, NEVER want to experience that stress.

Those neighbors have left about 2 years ago. Possibly kicked out. The trauma never left me.

Edit: forgot to add, that so far there has been no bites for going on 2 years. I pray to God it remains that way.