I totally agree that the whole process of w/d is weird and crazy. I understand the fear about the future and are things going to get worse. It is awful. I know the body takes a long time to heal and recover and I just hope that is what happens to us.
I haven't taken anything for my sleep, but I have nights when I think about it. Last night I manage three hours of broken sleep. I am exhausted today and it is making my w/d symptoms worse. I have been crying on and off today. I think the song looping and the weird desire to cut my hair are invasive thoughts. It is just frustrating to have them. I have had other weird invasive thoughts during withdrawal. If I told someone who wasn't going through w/d they just wouldn't understand.
Please let me know the results of your MRI.