What Now?

It seems like every day I have a doctors appointment. Test after test, yet nothing has been found. Will they ever be able to figure out what is wrong with me? Will I ever be able to return to my mission? 

Since coming home I have been to the Internal Med, GI, Neurologist, and Allergists and so far ALL of the tests have come back fine. WHAT IS WRONG WITH ME?!? I'm a medical mystery! All of the abdominal pain, weight/hair loss, seizures, etc unexplained.

I don't know where to go from here. I'm completely lost. Every time I tried turning to a friend I felt like I couldn't go to them or they were too busy. I'm surrounded by people yet I have never felt so alone. 

So What Now?