First i agree with LCC and Iladvocate. I like you waited too long to get help, the longer you wait the longer it will take to get better. I waited because I didn't want that whole depression syndrome thing with friends and co-workers. #1 Rule: It is not you're fault. LCC is most correct if you had a broken leg you wouldn't sit and wonder about getting it fixed, depression is no different and rule # 1 applies. Remember depression affects not just you but the entire family. Hubby needs to go with you to the Dr. so they can explain it to him or provide reading material so he can get a grip on what you are going through. DO NOT remain in a situation where you or the kids may be hurt. I don't know you're husband but i know my wife was getting angry with me, and quite frankly i understand why, it's hard for someone to watch the person they love go down the tubes, for seamingly no obvious reason get help..........
The path to wellness is taking that leap and going to get help. You already know something is wrong, so you need to see your doctor. You would if you had strep throat, this is no different. I know it's hard to get motivation, especially with an unsupportive spouse. If he is threatening you in any way, fro your and your children, look in the yellow pages, there are safe houses for women and their children. I do hope you can see your doctor quickly.
Depression causes under motivation and lack of energy. But your husband sounds emotionally abusive as well. You could speak to a therapist and perhaps a psychiatrist about your issues and see if you need treatment. But the first thing to do is have the issue settled about the way he treats you because that impacts on the entire family and has to stop.