Ditto on the nurse's comments : )
I will always tell you to get a cardiac workup or at least see a cardiologist, but I wouldn't get too excited just yet. The "hesitation" you feel is probably the pause after a PVC. This is an extra beat, but since the heart is refractory, it can't fill up at the normal time and waits for the NEXT signal, which feels like a pause. You should always make sure your heart is normal first.