I am sorry to read of your heart problems and I can understand how distressing this is for you.
I have a link from Mayo for you that may help you understand a bit about POTS:
We have had a few patients with POTS over the past and the sad part is not many understand this disorder.
Don't give up and know I am here to support you.
Moderator: Anxiety, Osteoarthritis,
GERD/Heartburn and Heart/Cardiovascular Disease.
"The wind blows, the sun rises, the snow falls and the ocean relentlessly pounds the shore. Life rolls on with fresh new possibilities at every turn."