I would try limiting eggs for a few days to see if that helps.
I have used SAM-E and Evening Primrose Oil with some modest success in helping with depression. They might be worth a try for you too.
Don't be afraid to get more help from a therapist and/or your doctor though. Depression can get very severe very quickly.
Using low lectin/nightshade free primal to control autoimmune arthritis. (And lost 50 lbs along the way )