Suicidal Husband

My husband has been acting depressed for months and when we argue he brings up that he doesn’t want to live anymore. We are having financial struggles and a baby due in February. His truck broke down today and he started talking about wanting to die again. It probably wasn’t the best time to say it but I mentioned maybe he needs to go stay with his parents for a while until he goes to a doctor because I’m sure the kids and my pregnancy isn’t helping any stress. I work too and since we own the house I don’t have any huge bills besides a car payment but I can cover them so he can have a break. I’m really not sure what to say or do. But I really feel like he needs to go take care of himself before he worries about us. If that makes sense. I try talking and comforting him but he just says he’s not going to a doctor and he doesn’t care about anything. I wish I could help more but I really don’t know how. I have a very close friend who just lost her husband to suicide before Christmas so I know it’s serious I just don’t know what to do.