I'm sorry I don't know anything about emsam.
It may be early days to draw conclusions about any new meds.
I don't know whether 1,000 mg depakote is a high dose to start on or a low one.
You could be on side effects (same as withdrawal effects) from your old antidepressants for some time to come.
Some doctors don't realise how much meds. need negotiating and discussing.