Not being a doctor - I can say that I many times have read in this group that vagus-nerve-induced palpitations quite often are felt in the neck. Because this "big" nerve, belonging to the autonomous nervous system ennervates both heart, lungs, neck, gi-tract and brain.
The vagus nerve sometimes carries "wayward" impulses which then might "hit" for instance both heart and neck.

To be sure, though, that what you are feeling really ARE benign palpitations, which it probably is, you should call at your doctor and get a checkup. I think a simple ecg will tell you if there might be something wrong.

Best of luck

Thanks for the replies. I hate that 24 hours a day, I am just waiting for another one to happen, cannot relax. Which I know doesn't help. I'm going to the doctors tomorrow so will see what happens.
Thanks.