have you ever been so nervous that you actually felt a heartbeat in throat?

Yep. I can feel and here it in my ears also.

Yes. I can also feel it in my stomach and hands sometimes too.

Yeah, I feel it in my chest pounding, across my body, all my pulses sometimes and even in my head which worries me, sometimes I feel like when it pounds, its like my eyes shake, like my head shakes, I don't know if anyone else gets that.