I'm 57 Yr Old Healthy Woman. I've Never Had Any

I'm 57 yr old healthy woman. I've never had any health issues if any kind. for the past few days I've been having heart flutters. No pain. No dizziness. No shortness of breath. I feel perfectly fine. It can happen when I'm being active, it can happen when I'm relaxing. I'm to the point now where I think I feel then when they're not even there.