I agree with what everyone has said here.
Many people have found relief by eliminating caffeine, watching their sugar intake, and adding magnesium to their diet. Maybe that might help you.
Keeping a log/diary of events might help you discover what is triggering your ectopics.
Have you gotten copies of all your results? That would be my first thing to do and take notes, ask questions to the dr if you don't understand something.
sometimes that "nothing" can be something or it could be anxiety, stress, our diet, sleep habits etc - it's always best to be safe
I'm guessing these are premature ventricular contractions, which are very common and usually benign. Yours fit the benign profile in terms of symptoms and frequency.
The way I see from my experience, you have two paths. More testing and/or medication to suppress the PVCs if they are causing you too much grief.
More testing:
You can have further testing done if you want. This could be an Echo, stress test, perhaps a nuke stress test. all this will give you is peace of mind if OK. I've been through all that + a cardiac MRI. I found a little reassurance from all this, but not a complete reassurance where I can ignore them. Your PVCs sound like they were much less than what I was getting.
As far as treating benign PVCs with meds
I tried mostly all of the blood pressure meds approach. Beta blockers and calcium channel blockers. for me they made it worse.
The next level up would have been anti arrhythmics. Those are completely out of the question for me, as those are dangerous to folks with benign arrhythmias.
I tried the meds and nothing helped. Testing helped a little bit in terms of reassurance. Everyone is different and dealing with these is trial and error.
I've learned to live with them through life style changes and stress reduction, for now....