Hi guys! I’m 22F and 5 months postpartum. Starting august I have had moments of heart racing. Could be sitting or standing. When I stand it goes higher to 120. Usually when I sit down it goes to 80s 90s. I’ve  had panic attacks where it will go to 180 and come right back down.

     Recently I had a tilt table test for suspected POTS. Ever since then I have been waking up with a racing heart just laying down and it can go to 150. I continue laying down and it’s takes about 10-15 minutes to lower and hovers around 120-150. Could this just be anxiety? When I walk around it does get elevated. Also when the happens sometimes my body feels warm inside and my chest feels tight/heavy and my left arm feels tight. More recently I have internal tremors when laying down as if my body is vibrating inside.
    It’s hard to think something is not wrong with my heart but I stayed in the hospital and did blood work, echo and many ekg and chest X-ray and everything was normal just sinus tachycardia. It could just be the pots becoming flared or I’m not sure. Im waiting for my tilt table result and stress test. I’m on Zoloft 25mg once a day at night for about a month.