What is going on with me

I am a mess and I am not sure what is going on with me.  4 months ago, I got out of rehab for taking 100 mg of adderall (adderrall) a day.  10 mg of klonapin a day and 60 mg of ambien a day.  I was also taking 5 mg of zyprexa.  I have lost it.  I got out and a doctor put me on doxepin and I had really bad side effects on it.  I have not been sleeping like at all.  My anxiety is pretty high all the time.  I got put on 100 mg of seroquel to help me sleep.  Every 3 nights I sleep.  the others I get 2 hours.  I have only been on it a week.  I have just been feeling really weird.  They are telling me that my equalibrium is off balance and my neurotransmitters are going haywire.  What do people think about seroqueal?  When will I start seeing a difference?  When will my head calm down?  This has been an absolute miserable detox and now no medication seems to wotk.  I can't take benzos.  I was in the hospital for two weeks.  My diagnosis was anxiety disorder, insomnia, benzo dependency.   I am exhausted and just want to sleep but I am having a hard time doing that.  Is this going to get better over time?  I have to believe it is.  Has anyone else gone through this?  Anyone know anything about seroqueal?  They put me on 200 mg of seroquel but it was too much for.  Crazy as this is, my body has become very sensitive to medication.  I just want it to calm down.  I do not want to feel this fight or flight response to everything. Any advise?  Thank you.  Happy Holidays!