Yes it happens to me as well. My heart skips beat randomly but sometimes ( not all ) when I'm super anxiety filled or have to speak to a crowd, or anxious... it will go crazy skipping back to back to back. Then that gives me anxiety. Its scary
Good news that your heart is 100% and stress can indeed result in irregular heart beats and many more very real symptoms.
This is natural and meant to occur as during stress we respond by hperventilation which invokes the 'fight or flight' response which supplies the necessary biochemical action so that we are better able to respond to the envisaged threat.
Understanding that this is a perfect response from your body the good news is that by consciously relaxing and breathing abdominally (feel your hand on your abdomen rising and falling) your body will restore its acid balance and the threat is now no longer there.
It really is worth reading up on this as it is amazing how what we see as a weakness is actually a strength and is there to help you survive in a more primitive world than the one we now live in.
dave