Heart beat in ear. Happening doctor.

Doctor i am male aged 22. I am having anxiety and panic. actually i had acidity,for acidity we get pain in chest.i tought its symptoms of heart attack and got checked ...doctor after taking ECG,2D ECHO,TMT said everything is normal.. doctor even when everything is normal, i am getting pains in legs, hands, head ache and also dizziness.. doctor most of all i am listening my heart beat in my ear... i hear that when the food i eat comes back in mouth...then i hear my heart beat in the ear.. why is that happening doctor. i am really tensed about that.some times i get that heart beat back of the ribs too.. listening heart beat in the left chest is okay..but i don't know why I am hearing it in ears and below the ribs. please help me doctor.