Welcome to the forums.
Unfortunately the wheels turn slowly, your paperwork will be in the process somewhere, hopefully getting towards a decision maker.
Although we are given strict guidelines in which to complete forms, attending appointments etc, the DWP do everything in their own time frame. For some it takes months and months and months.
There are many others going through migration who contribute here, some are still awaiting the move, others have been moved right into support, and others into WRAG, which then possibly leads to appeal situation. Hopefully they will offer some suggestions when they read your post.
Make sure you inform your medical team how stressed out your feeling, due to migration, so its recorded on your records.
There is an advocacy list at the bottom of my post you could either contact one of the organisations listed for support, or contact your MP http://www.theyworkforyou.com/
to see if they can speed up the process, this request can be strengthened with medical advice on how it is currently affecting you.
Good Luck and try to take each day as it comes.