So, I've been having heart issues for almost three months. Rapid beating and palpitations which were just diagnosed yesterday as sinus tachycardia and skipped beat from a holter monitor I wore from Dec 30 to Jan 19. My head has also been in pretty much constant pain, and my vision has changed. My blood pressure is always low. This morning it was 89/56 and pulse 73. My pulse is only okay when I am lying down, but that's also when my blood pressure is low. When I get up, my heart starts racing and I'll have shortness of breath. The past five days now I have been having heart attack pain... central chest, arms heavy and tingling fingers, jaw pain, shoulder and upper back pain. Possibly unrelated, but probably not, my bilirubin has been elevated this whole time. I'm at a total loss for what could be the cause. Any ideas, or at least how to get my BP up until they figure out the cause?