Hello and welcome to HCM
I read your mail in detail and wants to help you out. You have done your EKG when you have not a missing beat and reports normal. You needs to do Holter study which is 24 hours EKG recording and we can know about how many missing beats you have and what treatment you need.
The missing beat nay be Ectopic or Sinus pause
. The treatment are different for both. So in my advice go for holter study and than consult your Cardiologist and get proper treatment.