Why do i always feel like im gonna faint?

You need to have fasting blood tests to check for low blood glucose. Your mom's anemia has nothing to do with what's happening with you. You need to also ask for a CBC. Do you eat regular meals three times a day or do you miss meals or not eat enough so you can control your weight? Personally I believe that when the shaking starts, your blood sugar has dropped too low. JMO