Hi Lara, it's interesting to read your post because I am testing the same theory: That is, I started having palpitations at night when I never used to get them at night. Even though I have a history of GERD (diagnosed with endoscopy - I never had heartburn!), I did not suspect this as a cause at first. Instead, I've been going through Brainspotting which is a subtype of EMDR. Both are techniques to reprogram your brain relative to past traumas. I am getting great results emotionally from Brainspotting, however, my palpitaions (true premature ventricular contractions) have not changed much thus far after 3 months of therapy. Therefore, I am starting a course of Prilosec like you to see what role GERD is playing in my PVC's. I guess I won't know for a while but in the meantime, my cardiologists has sent me to get tested for sleep apnea as this can be a cause as well. I wonder if there is a strong relationship between all 3: Sleep apnea - Anxiety - GERD?? I'll keep you posted on my progress.