I know what you mean. My husband doesn't understand me either. We actually had a discussion last night about my condition. I ended up crying and his words to me were "This is why I don't like to talk about this stuff because you get so emotional".
His non-understanding has driven a wedge between us. We don't talk, we just exist.
I asked him to go to my next appointment with me to my Pdoc in hopes of talking to the doctor and getting some information on why I am the way I am. I hoping it will be an educational experience for him.