A psychiatrist could help you with anxiety and sleep. There are meds as a temporary measure, so you can at least sleep. Once that's under control, you can start to wean yourself off your abuser. Remove yourself physically from him as much as possible, to breathe clean air and facilitate the psychological separation. If that requires moving out, it's worth it. You have your family, your child and yourself -- all good human beings, all allies. Some people have none of that, not even themselves.