Why do my hands get shaky when someone asks me a question?

Name: Prisha Chatterjee

Date of Birth: 6th January 2004

Place of Birth: Lucknow

Time of Birth: 8:45 AM

In class, even if someone asks me a small question. Yes, I know the answer. But, it makes my heart race like it is going to come out in my hand. I read a lot about astrology, even check my horoscope everyday. Is this linked with my mercury, I heard it manages communication issues or any other things influencing my charts.

I do every suggestion I get in my horoscope though.