So interesting that you mention swallowing. Do you get palpitations after swallowing?
I have had palpitations since november. I first noticed them after I slept one night at a friends house on an extremely bad mattress and woke up with back pain. Since then I get them, about every 4-5 weeks for 2-3 days. In between I am always completely symptom free. Since then I also often wake up with back pain, but i never really connected those symptons until now.
I get the palpitations especially when swallowing, I swallow and 1-2 seconds later I feel my heart stumbling. Sometimes I even have several extra beats in a row, which really scare me. I have had a holter monitor twice so far. However, I never had any symptoms while wearing it, and it always came back normal. My heart echo also was normal.