Hi. Sorry you have to go through this. As a person living with it i can tell you it is no picnic. When someone (and I am generalizing here, i am not a professional. just going off of my experience) is depressed, they feel unworthy. I have a fantastic group of genuine friends who care for me, but when I am depressed I cut myself off. I feel paranoid, as if they no longer like me. I stop calling and talking to them. I go into complete isolation. I am on medication but I do the stupid thing occassionally and stop taking it when I feel good sometimes. He may really feel like something will happen. You don't think rational thoughts when you are depressed. It affects every part of your life. You feel like you don't care about anything or anyone, because no one cares about you. I have a husband and 2 kids and sometimes life is hard.
Maybe go to the Dr. with him and help him make a decision. Even if he feels like he doesn't need medicine, he does. Offer to go to the Dr. with him and tell him you are there. He may still resist, but please don't get angry with him. I know when my husband asks if I took my pill, it just sets me off.
It's not easy by any means. You are going through so much and I feel for you. Maybe you can find an online support group that you can vent so you don't feel so alone.
Good luck.