It sounds like PVCs (premature ventricular contractions) which feel weird but arent life threatening.
Whenever I have the skipped beat sensations, there's like an anxious feeling in my chest and sort of a feeling like my body is heavy. It is the same sensation that I get during panic attacks but much less severe. The sensation never lasts. It goes away immediately after the beat. I'm terrified these fuckers are going to kill me. I have no idea why all of a sudden these are happening so frequently.