Hello and thank you for using HCM.I carefully read your question and I understand your concern.You shoud not worry.
This skipped beat has to with a rhythm issue. There are some electrical impulses that generates from different parts of the heart different from normal
sinus rhythm.They cause a premature heart contaction that its not a normal one followed by a pause and than a normal heart contraction.This are what we call extra sistolic beats.
There are different causes of extrasistoles to simple emotional stress, coffee and alcohol consumption.
Also pathologys like anemia ,
hyperthyroidism,
hormonal changes or
ischemic heart disease might be other causes.
Extra sistolic beats give you such symptoms like
palpitation, anxiety, difficulties in breathing deeply.
If you are passing through a streesed period these extrasistoles are quite normal.Soon they will pass so you have nothing to worry about.
Only if they begin to interfere your normal life I would recomend some examination like an electrocardiogram , a cardiac echo to evaluate heart function, a full blood analyze, your thyroid hormones and a holter rhythm monitoring to see the frequency of extra beats.
Hope I was helpful.Wish you good health.
Best regards