I'm so sorry that you are going through this. If it makes you feel any better, I had a cardiac workup last spring (at my request, the dr thought I was nuts). I have always felt "skipped" beats and struggled with anxiety and sometimes racing heartrate. Some PVCs did show up on my monitor (actually, PSVCs, premature supra ventricular contractions). They are considered benign and just annoying. I go through spurts where they are more/less frequent and I have had them during this pregnancy, probably a dozen or so a day. My heartrate always speeds up right after because of my anxiety about them and if I get really hot or anxious they are more likely to happen. That being said, there are those random ones that happen while I am relaxing or laying in bed.
It did make me feel better to know that they were real, that I wasn't crazy, and most of all that it wasn't a health concern. Avoiding caffeine and MSG really has helped me overall.
I hope your monitor results come back soon and you begin to feel reassured!
Happy Mommy to one amazing girl (11y) and one sweet boy (7y), and wife to DH since 7/03 : :