Hi Mary, I can totally relate. I get pvc's (mostly at night), and they freak me out totally.
I have tried magnesium and I don't notice a difference.
They go away for weeks at a time, then they return. I have given up on asking for anything for them. If they are benign, just wait them out.
I also don't sleep when they happen. This forum really helps. You are not alone.
MAXX