I FREQUENTLY HAVE A RAPID HEARTBEAT FOLLOWED BY THE THROAT

I FREQUENTLY HAVE A RAPID HEARTBEAT FOLLOWED BY THE THROAT FEELING LIKE IT IS CLOSING OFF. OFTEN THIS LEADS TO A BRIEF HEADACHE. I HAVE HAD ALL OF THE TESTS WITH MY CARDIOLOGIST WHICH SHOWED NOTHING. MY PRIMARY DOCTOR SAYS I HAVE ANXIETY ATTACKS, BUT I DON'T THINK SO. I AM NOW WONDERING IF IT IS CAUSED BY MY NECK. IF MY NECK GETS IN A CRAMPED OR AWKWARD POSITION, THE HEART PALPITATIONS START. COULD ALL OF THIS BE CAUSED BY MY NECK?