Hello. Thank you for your question and welcome to HCM. I understand your concern.
My first recommendation would be that you should perform a cardiac check-up, with EKG,
echocardiogram and cardiac
stress test. Also, I would strongly recommend you to be put on a 24- or 48-hour Holter rhythm monitor. The figures that you provided are not extremely low, but adding symptoms such as dizzines/near-fainting/fainting, combined with the fact that you are not on medication that can slow down the heart beat (such as beta-blockers or calcium channel blockers), this picture may indicate the need for pacemaker
implantation. After you get the rhythm monitor results back, you should discuss this option with your curing cardiologist.
Furthermore, I would like to clarify that
dizziness commonly can come from inflammation of the
inner ear. Believe it or not, it is an organ that controls our standing balance. Therefore, I would recommend you to see a otorhinolaringologist (ENT doctor). Because, if we attribute the dizziness to the inner ear, then our differential diagnosis would be easier.
I hope I was helpful. Feel free to ask again. Best regards.