I have been to a Dr who is treating me for pots syndrome. I have been taking fludrocortisone. .3mg and symptoms have been good. Today it is acting up really bad. I am dizzy, shaky, eyes don t focus heart feels like it is racing my blood pressure is 5pm. 103/68 heart rate 65. Sitting. 68/45. Heart rate 64. Standing 6pm. 92/60. 74. 80/59. 118 it feels like my pills aren t working. When should I be worried and go to emergency. We have a dr shortage and it may take 6 hours.