Im on bc. after eating too much i feel nausea and have headache...could it be the bc? or its my stomach? im vegetarian

Reason?: If you had been tolerating the oral contraceptive well but are just now experiencing sxs after over-eating - than it is more likely related to eating. However, you could also becoming down with a virus. Probably the simplest way to reduce nausea ; upset stomach is with ginger. You can drink slightly flattened ginger ale or nibble on crystallized ginger.