I guess this is just another "hang in there" comment. My boy did the same thing: he started crying when we were half way to the pediatrician because he knew the route we took only went to that one place; The pediatrician was worse than the CF clinic because of all the vaccinations those first couple years. We tried to give him a promise of something fun after the appointments and focusing on talking about that instead of the Dr.: a trip to the park or out for lunch or whatever fit his interests at the time...but I'm afraid mostly it was just waiting until he was old enough to realize that the Dr. appointments only lasted a little while and then it was all done.