the elevated levels of estrogen in your system can slow the emptying of your stomach. this contributes to another early symptom of pregnancy nausea or what many women call morning sickness. not every woman gets morning sickness and for many that do morning sickness is a misnomer. the nauseous feeling can and often does occur at any time during the day. along with feeling nauseous some women develop food aversions or food cravings when they become pregnant. these early pregnancy symptoms are also related to hormonal changes. the effect can be so strong that even the thought of what used to be a favorite food can turn your stomach. things other than pregnancy can cause these symptoms. for instance a gastrointestinal upset or some other illness can be responsible for the nauseous feelings. a change in diet stress depression or even being premenstrual may account for the cravings or food aversions. it's possible that the nausea cravings and food aversions can last for the entire pregnancy. fortunately many women experience a lessening of the symptoms at about the 13th or 14th week. in the meantime it's important to discuss your diet with your doctor to make sure that you and your developing baby get essential nutrients.
how is nausea or morning sickness an early sign of pregnancy?