Welcome to HCM,
You seem to have stable angina
and leaky valve possibly degenerative,your pain is Atypical it may have ischemic element in it.
This is good that you take aspirin
and statin both are known to be beneficial in Ischemic heart disease
If your heart rate
is fast why are you not given any kind of Beta blocker
which will help greatly for angina as well as fast heart rate.
Nitrate can be used with consultation of Physician /Cardiologist if not regularly on as and when required basis ( SOS)
There are very good anti anginal drugs available your physician can decide what is best for you.
If you angina becomes unstable then assessment and intervention may become necessary.
Please do not worry take care of diet and exercise and see your physician to be sure if this is angina you get optimal therapy.
Best of Luck.