SK.
I am sorry that you are feeling so scared at this current time.
I know how awful that feels.
Do you see a regular GP, or a cardiologist?
If your regular doctor is not taking you as seriously as you want/need him to, then I would encourage you to go ahead and seek a referral to a specialist.
Not because I think that you have reason to worry, but for peace of mind...and because you do have a family history, it could be good preventitive medicine.
An EKG and 24 hour monitor are actually good indications of basic cardiac health for the average person. If however, you do have genetic risk factors, then you are well within your rights to pursue a deeper evaluation of your health.
I hope that you can get the attention and care that you are seeking soon. Until then, use your coping skills to get you through this rough time.
Know that we are here to support you, so post anytime!
S.C.