I am autoimmune disorder patient. I do.

I am sorry to know about it and upset with the behavior family members are doing with you.  Basic problem appears to be rheumatic joint problems. Sometime pain and neurobilogical consequence of problem can contribute to depression apart from adverse psychosocial situation including neglected behavior of family problem. I dont know whethere these conflicts with spouse and other people in family are before or after the starting of this problem. Any way it needs intervention and good psychosocial approach and family counselling by a trained psychiatrist or psychotherapist. You should also consult a good  rheumatic specialist in your district or state. .  Suicidal ideation itself a emergency and consult a psychiatrist at the earliest informing your family member as well.  If it is too severe it may also warrant a  electroconvulsive therapy apart from antidepressants.