How concerned should I be about bradycardia?

[Twinstimestwo]

I am a 38 year old female, roughly 175 pounds. I do not workout, but I’m moderately active (I do a lot of walking, but rarely vigorous exercise). I have four children and a sedentary but stressful full time job. Over the last five or so months, I’ve been experiencing severe fatigue, dizziness, and what feels like brain fog - my ability to concentrate is gone, I struggle to remember names of people I’ve known for years, and I get easily confused about where I am when I’m driving. This is all highly unusual for me. I’ve also been having some chest pains in the right side of my chest. I was seen at the ER for the chest pains a couple weeks ago - EKG was normal but showed bradycardia. No signs of heart attack or stroke. They sent me home. I still feel terrible. I monitor my heart rate daily using a smart watch, and my minimum heart rate stays in the low to mid 40s. Maximum is almost always over 100, and frequently over 130. I have not done any more than moderate walking in months because I have no energy and it’s hard to breathe.  I’m winded just walking short distances. Should I be concerned about the bradycardia?