Yes I get the rapid heartbeat with mine among all the other things that happen to me...nausea, sweating, cold clamy hands, trouble breathing, headache and that spacy feeling. Maybe yours is an attack just a mild one? Our hearts beat fast after many activities and its not bad for us then. Yours does it when you are sitting still probably being a mild attack but the way I feel its no different than it beating fast from running or physical excertion. Thats the way I try and think of it anyway.
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Cheers...Autumn
Female...42
TMJD for 12 years
Carpal Tunnel syndrome
Anxiety/Panic Attacks (cured now I think)
Teen daughters that have had medical problems and I will help and over advice on what areas I am knowledgable in.