 [ Symptoms ] after walking a short distance my heart beats very strongly as if i just ran occasionally with lightheadedness included my heart also not exactly hurts but feels as if it is being held or squeezed almost like if you fully exhale and stick out your stomach and you feel a pressure in your chest this is a constant discomfort and has been for about three days i am 14 female and i get regular exercise i am hoping it is nothing serious [ Disease ] the income you use is your modified adjusted gross income which in most cases is the same as your adjusted gross income on your tax form so it is not your total income but the income adjusted for your deductions and credits