I Am 52, Female 195 Lbs. I Exercise 3- 5

I am 52, female 195 lbs. I exercise 3- 5 times a week. I recently was diagnosed with congestive heart failure when sent to the emergency room after having a stent removed for kidney stones. (I was retaining fluid and a little short of breath) I came back to NC to follow up work my doctor who said my bnp was not high and sent me for echo. I have always had low blood pressure and body temp. I wake up sweating at night and am cold during the day. I have complained about feeling extremely fatigue (often) for the past 3 years. My stomach hurts often. My blood pressure is 95/51 pulse 77.