Tiny Black Biting Bugs?

I have recently been seeing these little black dots on my skin. They bite maybe because I feel the pain. My skin gets red and swells a little. It doesn't last very long though. These dots are really small. I went to the doctor after treating with permethrin cream head to toe and threw away or bagged and washed all clothes and rugs. I got an air mattress also and threw old out my old one.

I explained to the doctor what I had experienced and after a few days of treating with permethrin I get bit again. I'm so upset and emotional over this no one believes me and the doctor said they can't treat me for something they can't see. While I was in the doctor's office I didn't have any bites.

I try and catch them to save the bugs or mites and they're so little it looks like a spec of nothing. Everyone thinks I'm crazy but I'm not. They are black dots or tiny red specs that burn like fire when they bite me. My boyfriend has also been bitten. Please give advice. Oh also, I have been scratching and picking. I have scabs because they itch and I feel like the bite might be causing a reaction. They have also gotten in my scalp on my hair in a few places. When I comb through my hair with a lice comb little white stuff and black dots are seen and every so often a small red thing.