Hi Lundblad,Welcome to HealingWell. I understand your problem. Have you seen a therapist for yourself to help you sort out your feelings. I know your son is 17 but I would guess in a year he will be off to college or whatever he chooses so perhaps the two of you should sit down and talk about your feelings.
Does your husband have a back up support system if you decided to go your own way.
I know this is painful for you but you are entitled to a good life too, a life of happiness and love, caring and sharing. Mental Health issues are always tough as living with someone with Depression is not easy. My husband has had to live with me.
Please do find a friend, minister or someone to talk with that will remain neutral but let you talk about your feelings.
You have lots of support right here.