i am so sorry that this has happened to you. it is such a blow. is it just you or do you have children.?
do you have a supportive doctor? i would get the mental health stabilised. your family are rubbing you up the wrong way with their "care". i would just believe they are doing their best. perhaps you could sit them down and tell them gently how you feel. i dont know what the physical problems are, but there are always answers in very impossible situations. dont give up hope.