But bites?

I've recently got tons of bug bites all over my body and my 2 year old randomly got 2 of them. I'm so lost to what it is, I've so far cleaned everything used medicines on my hair and it's still there. I see or feel nothing till I get itchy. I have bites all over my body and my 2year old has 2 and my hubby hasn't even been bite. Any advice? I don't think it's bedbugs cause I would see something.

my finger^

4 just on my fore arm^

on my ankle

on my knee ^

on my elbow ^ etc etc