I was watching 24 hours in A&E this week and they were treating a gentleman with a fast heart rate. I decided to test mine for fun and it was 55. I checked Dr Google as you do and it said it was on the low side. Athletes tend to have rates below 60.
I do no exercise at all!
I tested again now and it was 51.
As an aside I have had a few instances of feeling faint in the past couple of weeks but I put it down to standing up too quickly.
I have a health check with the GP booked for 19th September. I'm 41 so have been sent an appointment for one of those age related ones.
Would you try to see a GP sooner?
Thanks.