Cyran0,
I'm sorry to hear things have been so hard lately. The severe nausea/morning sickness reminds me of the depression Andrew Solomon writes about in Noonday Demon. Please allow yourself the smallest glimmer of hope. I do know that the most proven treatments for depression are medication and psychotherapy. Sometimes the combination needs to be altered and calibrated over and over... Is it possible to tweak medication or go more often to a therapist? A friend of mine who has suffered from severe lifetime depression has found additional relief from the new TMS treatment. Could it be a possibility? With a mix of these treatments and therapies she has been able to overcome the illness, or essentially manage it very well - which often gives me hope. Please continue to reach out for help.
Sending many supportive thoughts your way.