I get heart flutters when lying down then burping right after? why? normal ekg/echo/holter/stress. occasional pvc's/pac's with anxiety.

Stress: make sure you have a better control of your stress and anxiety even if you have to take medicine for it make sure you do not have any digestive problems that could imitate heart problem since you were cleared by cardiologist from any heart problem you might need to see a specialist on cardiac electrical system to make sure these arrhythmia are not from faulty heart wiring good luck