Clonidine, trazodone, and maybe a non-abusable muscle relaxant such as Skelaxin could be useful. Clonidine is a mainstay in opioid detox. I am really glad you are getting professional help, Mary! I know I couldn't get clean alone and your story sounds alot like mine. I am a pharmacist and recovering opioid addict. The difference is I got caught. It's great you're seeking help before this happens to you.
Pine Grove Next Step is where I went to treatment. They have an excellent program for "impaired healthcare professionals." Feel free to send me a personal message if you like also, OK? I'm wishing you all the best!!
Love and hugs,
Eddie