Severe nausea is a common sign of morning sickness. This can feel like constant motion sickness or like the stomach flu is coming on. There may or may not be vomiting present with nausea. Certain activities like brushing the teeth can trigger this nausea. Pregnant women have a keen sense of smell, and this sense can make them sensitive to certain odors, triggering nausea. Foods that were palatable before pregnancy may seem unappetizing and cause nausea. It seems paradoxical, but eating small snacks like crackers when nausea hits seems to help many women. Also, instead of eating three large meals a day, it may be easier on the stomach to eat smaller but more frequent meals.Next