Throbbing tight neck, palpitations and stomach and chest pain. can gerd cause this?

Well yes....: without an exam, I can only give general information, so I cant say it IS causing that (panic attacks, maybe mitral valve prolapse, ulcer disease with bleeding and anemia are some of th emany other possiblities.

Yes possible : These symptoms can be caused by angina , heart attack, panic attack, valve prolapse as well . Best to discuss with your doctor.

Possible: These symptoms can be attributed to GERD but there can be other causes too like angina , heart valve problems . Good to consult with a doctor.