Hi LIV, sounds like you are going through the wringer, I'm sorry you are going through this. May I ask about your son's diet? You may find that a change to the ketogenic diet could have some positive effects, especially if you are getting nowhere with your doctor. I would try going to a different doctor as well.
Practicing EE on a regular basis can also have positive benefits. It may really help with your stress levels.
All these cars breaking down, your vehicle isn't running the way it should. Could it be symbolic of your own personal vehicle; your body and changes in diet and health that you may need for it to function effectively?
Hang in there.