I Am A 35 Year Old Female. I'm 5'2 And

I am a 35 year old female. I'm 5'2 and I'm 135 pounds. I have scabs appearing all over my body. Mainly my back and buttocks. It has been occurring over the last two years. I originally thought it was just from scratching myself in the middle of the night. I am finding now the scabs are in the middle of my back. I would not be able to scratch myself there while I'm asleep. We had an episode of scabies about 6 months ago in the household but my entire family was treated. Even those that were showing no symptoms. However, as i said before, I have been experiencing this now going on 2 years. I am getting progressively concerned because I have no insurance but if I have something contagious I do not want to expose my daughter to this. Any help would be appreciated. Thank you.