You are about to go through a wondrous miracle that will last for the next forty weeks. These forty weeks are divided into three trimesters. At the same time your senses begin to sharpen, and may cause you to develop an aversion to certain smells, and foods. But the main reason for morning sickness is due to an empty stomach with increased stomach acids in the morning when you first wake. But don't let the title deceive you.
Morning sickness can often hit morning, noon, and night.
You can take some relief in knowing that in most women, it usually goes away at the end of the first trimester, with few having it linger on the entire pregnancy. If you experience no morning sickness, consider yourself lucky, and don't worry that there is something wrong with your pregnancy. If you aren't lucky enough to avoid the morning sickness, eating several small meals a day may help. It is also advised to snack on bland foods, but try not to let your stomach get too empty. Also carefully read your prenatal vitamin packages for directions when to take them.