Are all heart diseases hereditary?

Majority of the know heart diseases today can be inherited but a few may be a product of genetic mutation. Some congenital heart diseases are born out of abnormality in genes

Yes, it may be inherited. Same reason why pregnant women, or any ordinary sick person, will be ask of any history of heart disease among immediate family.

As per my cardio, more likely yes, it is hereditary. It's a must to know your family's health background. Anyways, doctors ask that during checkups.