First, everyone gets PVCs--but many people never so much as feel them. For those who do, though, they can trigger panic, which is a funny state of affairs. You don't even have to have any kind of anxiety disorder to experience it, since it can come out of the blue (ask me how I know this).
But once you've had one such attack, the dam*dest little things can trigger it, things like sensing a medically insignificant PVC. The symptoms often include a feeling of not being able to breathe or get enough air.
This is a medical problem, not something you can just develop will power for. So you go to the right doctor, and just as you go to a cardiologist for a heart problem, for a problem that involves an inappropriate emotional response, you to to a counselor or shrink.
Studies have shown that the most effective treatment is a mixture of a little bit of medication plus something called 'cognitive/behavioral therapy.'
Not getting a handle on this can lead people into a state of crippling fear of even going outside, lest the symptoms should occur anywhere but a 'safe' place, like the home.
Ask your PCP for a referral to a good counselor to investigate the possibility of anxiety or panic, and check out the info here:
https://www.helpguide.org/articles/anxiety/panic-attacks-and-panic-disorders.htm