hello n welcome ....
first of all very few RARE heart disease
MAY transferred to next generation.
most of the disease became obvious before the age of 5-10 years.
and rest of the disease comes during our NATURAL course of life, i.e. heart attack
secondly ur WORRY, that worry will not take u any where, only it will put in stress
regarding ur problem 2 childhood it may be common problem with young age.
so, dont worry n be happy, u r havinga strong heart.
wish u a HEALTHY n STRONG heart....