Husband depressed- help 😢

After two weeks my hubby finally takes down the walls to reveal he's horribly depressed. He hasn't been to work in 3 days and has just been totally isolating himself from everyone. I feel terrible for making these past two weeks about what I have gone thru and not what "we" have gone thru. I don't know how to help him... It scares me to see him like this. Any advice would be greatly appreciated. Thank you very much.