Nausea is most common in the first trimester but usually lessens later on, tapering off by the second trimester.
The exact cause of morning sickness is unknown, although some references point to low blood sugar. The pregnancy hormones may also irritate the stomach directly.
Not all morning sickness remedies will work for you, but here is a collection of suggested remedies. You may have to try a few in order to get some relief.
Be sure to discuss your morning sickness and potential relief with your doctor.
Food and Drink:
If you vomit more than three times a day for three days, tell your doctor! In severe cases, your doctor may want you to go to the hospital for treatment to replace the fluids that you've lost.