I hate to burst your bubble, but you don't have this.
I know someone who died from this—he dropped dead while playing basketball; he was 42 years old at the time.
But you know what else? He was a former professional tennis player. He taught tennis lessons and managed a gym.
That's the type of person who is most at risk of HCM—an athlete, usually of the elite or professional variety. That's how the muscle of the heart thickens—through HOURS of training, day in, day out.
The likelihood of you having this problem, while not falling into this athletic category; without any prior family history; without a background of heart problems yourself—it's INCREDIBLY rare.
Palpitations are extremely common and strictly benign, except in this one instance.
I would recommend that you lay off the Google crack pipe for a little while—all it's doing is driving up your anxiety, and in the process probably even making you more susceptible to increased palpitations.