I'm sorry to hear that your husband had such a difficult time at his prior job that it resulted in his having, I would assume, a major depressive episode. Although you've indicated that he's going to his PCP to get meds, I'm wondering if this is the course he should be pursuing. Psychotropic medications often require a bit more knowledge than the PCP can bring to the situation and this needs to be considered.
The other point that needs to be considered is psychotherapy both for him as an individual and for the 2 of you as a couple. He may not wish to go to counseling for himself, but he is not alone in this situation and it is something that the 2 of you need to work on together. Depression is a terrible illness and it is probably one of the most serious illnesses we have in the country today. It robs people of their personalities and causes an ordinate amounts of problems in family situations. Yes, it is a very difficult situation for the person who is depressed and for anyone who comes into contact with them and it can place extreme strain on the relationship.
As I've said, it's something that must be worked on by the 2 of you because you deserve help too. Things won't change overnight and he won't be able to look for a job immediately, I would assume. It will take time and, in the interim, he probably should be applying for some type of disability benefits.
I hope the 2 of you will work together on this so that there can be a good resolution.
Dr. Farrell