Joe gave you some good advice on treating your environment and yourself. An environmental mite is one that lives in your home or car, such as the flooring, furniture, paper, boxes, etc. As far as using garden sulfur, some have used it on this forum with no ill effects. Others have used the sublimed sulfur that Joe recommended. You can mix t.e sulfur with lotion or vaseline. 90% lotion to 10% sulfur. Never put straight sulfur on your skin. It can also be very drying so you may want to exfoliate in the shower or bath.
Are the specks you see about the size of a period at the end of a sentence or a bit bigger? You said one almost looked like a small tick. If you'd like, I could help you get an id on these. It's up to you and I don't want you to feel overwhelmed. You are going through a lot but like Joe said, don't be afraid of these suckers. You'll get through this and be a stronger person for it.
Is there a chance I could call or send you my number?
I really need help with identifying these. From my searches if I don't use the correct pesticide then it is not going to do anything.
I don't think our county extension agent will help much or even some of the people at the state because I was so much trouble with the powder post beetles. Someone did come to the house and immediately started taking pictures and sending them to someone in Nashville. It will be much harder to get accurate samples of a mite since they are so small. We tried once and they said it was said seed. I am almost sure we are going to have to fumigate since our furniture has powder post beetles. But if we don't knowk what type of mite we have I don't know how we can control it from happening again. We do have mice and lots of other wildlife that we never had any place we lived. I am close to a lake and the Smokey Mts. Our land use to be a dairy farm. When it rains we have tons of insects on our porches. I don't mind if they don't eat my house or me.