I feel off balance and i get heart palpitations and buzzing in legs and i have hand tremors as well. what could be the reason?

Your body is talking to u. Listen and take good notes. The share with Dr who can examine you and order needed tests if any.

Dr Grim told you that your body is talking to you, I concur. I will say that sometimes panic attacks present this way, but physiological causes can mimic a panic attack and they need to be excluded, or as your doc will tell you, "ruled out." Consider me a second doc here telling you you need to be evaluated, and good luck