Welcome to HCM
We understand your concerns.
The symptoms you mention does not stand a reason to think seriously withoug some other assoiated symptoms, which then can be termed as cardiac or nerve problems.
Left hand becoming numb alone cannot be termed as a problem related to heart.
Twithing left eye has several reasons. It come and go. Muscle spasm is th reason
If it is prolonged, then your habbit of alcohol and smoking
may be a reason. Caffeine also can aggrevate it.
, eye strin, environmental allergies can also become causes.