Hugs back, Artie. I hope the heart issue is anxiety and nothing more serious than that. They always do an EKG at my physicals--not sure if they do for yours or it's just a thing my doctor does. But that would be a quick way to check your general heart rhythm. I'd definitely mention it and see if you might need a cardiologist referral. I had issues a couple years ago with seemingly random heart rate spikes (well, I also have anxiety, but they didn't seem triggered by a particular thought/situation). He had me do a 24-hour Holter monitor thing, which showed my rhythm as normal and gave me peace of mind.
What kind of wearable device did you get? I've used both Fitbit (a couple different models) and a Garmin.
In terms of the other medical thing