when im sitting or lying down i feel a pulsing feeling in my body and i can hear my heartbeat in my head.my heart isnt beating any faster than usual, but it really annoying.i feel like i am throbbing.last nite i woke to the sound of my heart in my ears.i do have anxiety and panic disorder and i know it has been acting up this last wk.i was wondering if this pulsing is my anxiety,even though i dont feel anxious,or could it be something more?