I don't understand how anyone having multiple PVC's in a few minutes time can NOT notice them. I very much notice mine. It creates a very noticeable "sinking" feeling in my chest and it feel like my heart shuts "off" for a second. When I have 3 or 4 normal beats then a PVC, then 3 or 4 normal beats then a PVC etc for half an hour or more, it is very "draining". I feel tired and wore out when my beats return to normal.
My 21 year old son started having them and it got bad one night so he went in to the ER and was diagnosed with PVC's. He cut out energy drinks and soda and finally {yaaaay!!!} quit smoking cigarettes and he hardly has any now. I don't drink coffee or soda or smoke. I do enjoy expensive dark chocolate more than I should though.
Uncontrolled diabetics can have a massive MI without any pain at all. Of course, they can't feel their toes either....neuropathy sucks.
In the end, it all depends on the person. Unfortunately for youl your family obviously feels them all.
