Sounds like it's time for an evaluation by a cardiologist. These are classic anginal symptoms. Speak with a cardiologist and review your options. You could have a nuclear stress test
done to determine if you might have a blockage. Or, you could have an angiogream done to definitively determine artyery blockage. You're at high risk from family disease, but other factors would be high blood pressure
. Best to check in with your doctor!