I feel fine all day, eat regularly and hungry at the right times. but at night near bed time i am usually nausea. i know i am not pregnant?

Nausea at bedtime: Depending on when your last meal was prior to bedtime, nausea can indicate increased acid production in your stomach. If you are under increased stress, a stomach ulcer or inflammation of the stomach lining can cause nausea. Try milk in the evening or a common antacid , but if this persists, see your healthcare provider for testing.