This time she is nine weeks pregnant and we are worried about the baby. She's had morning sickness but last night's event was nothing like that. Your daughter may have hyperemesis gravidarum, or an exaggerated form of morning sickness. This condition occurs in fewer than one in 200 pregnancies and causes severe nausea and vomiting. It is more common in first-time mothers, women who are carrying multiple fetuses and in those who had it with previous pregnancies.
Psychological stress can be a factor.
Also, some people have increased sensitivity in the part of the brain that controls vomiting. If the vomiting is accompanied by severe abdominal pain, tests usually are done to rule out gallbladder or pancreas disease. Mild cases are treated with rest, antacids and anti-vomiting medication. If vomiting continues and prevents weight gain, hospitalization may be required, along with intravenous fluids, medication and reduced environmental stimulation. Sometimes psychotherapy is offered to reduce tension.