I went to dr today, I have been feeling severe fatigue, constant headache, racing heart. My heart rate was 38 sitting, bp 108/80 she took this a couple times and came out the same. They took it with me laying down and and pulse was 70. I go for a echo cardio gram in four days. Is this something I need to worry about over the weekend? I am 52 yrs old 140 lbs, med history Chiari Malformation with deminished CSF flow, I had chiari decompression in 2011. Cerebellum has dropped back down. I also have Ehlers-Danlos Syndrome. Thank you for your help!