Ive been going through the exact same investigations this past month
Im my case ( just this week turned 60 ) I have had high BP most of my life, and I mean high enough to warrant a few admissions to hospital over the years, Last year I lost a lot of weight, got very much into healthy living, - exercise and diet - and this time last year was given the go ahead to come off BP meds
I had a resting pulse of between 55 and 58 and a steady ( if a wee bit high) BP.
June I did my first ever marathon
Start of August I couldn't walk the length of myself due to shortness of breath
Pulse was constantly over 100bpm , peaking at 135 and staying that high for hours. Constantly exhausted, headaches, short of breath and TBH scared
Ecg and 24hr testing shows my pulse is high - but my rhythm is normal
BP has been very high
I have been tested for absolutely everything - even Covid and there is nothing "wrong"
Obviously Im back on BP meds and now Im taking a beta blocker for the heart rate
Been on the Beta Blockers for a week and returned to work today, the busiest day of the year, and my heart monitor showed heart rate never went above 90
Probable diagnoses - which has been really left for me to work out - gp and clinic have told me there is nowt wrong with my heart and everything is normal - - stress and anxiety.
I was in a bad situation driving the other month. A drink driver. I was stuck behind them for maybe 3 miles before I could find a safe place to pull over and call the police. I really was shaken to the core, really shaken, I was in tears on the phone and really wobbly on my legs when I got to my destination. And it has been whilst Ive been driving that my heart monitor ( watch ) has been beeping at me
Now I know theres nowt seriously wrong with me Im a bit more clear in the head. During the menopause I did start to feel very anxious driving and there was a time I would avoid motorways. Actually lets be honest, what with brain fog, thinking I had lost my marbles at times, I was very anxious and went on Sertraline (sp? ) , something else I came off 20 months ago. So it makes sense to me now that driving is a stress to me and that the drink driver incident has just triggered it all again. Unfortunately living rural with no public transport, driving is a must if I want to work and have a life
I have felt really ill this past couple of months - a racing pulse will do that - but now the BP is back under control and the Beta Blockers are keeping the heart rate down, Im back to feeling pretty well. They have tested my watch against their monitor and its acruate so I have to go back in 2 more weeks with my recordings and if anything shows up, then Im getting referred to cardiology, but the GP was confident I was grand and now im confident I am as well
It is a scarey time for sure. and being scared and anxious can really make the symptoms worse.
I hope you get to the bottom of whats happening to you sharpish.