Vomiting in the third trimester of pregnancy can be caused by hormonal fluctuations, stomach bugs, impending labor, HELLP syndrome, or pre-eclampsia. Treatment depends on the cause and severity of symptoms, and any concerns should be discussed with a doctor.
Nausea and vomiting are common symptoms in early pregnancy, but some women may become alarmed when these symptoms recur during the final stage of pregnancy. Some of the more common reasons for third trimester vomiting include hormonal fluctuations, the presence of a stomach bug, or impending labor. Relatively rare but potentially serious causes of vomiting during the third trimester include a condition known as HELLP syndrome and a complication known as pre-eclampsia. Any specific questions or concerns about vomiting in an individual situation should be discussed with a doctor or other medical professional.
Gastroenteritis, more commonly called stomach flu, is a relatively common cause of vomiting in the third trimester. Additional symptoms may include diarrhea, cramps, or fever. Treatment usually consists of rest and drinking extra fluids to prevent dehydration. These symptoms usually go away within a few days without any specific medical treatment, but any concerns should be addressed with the obstetrician just to make sure no complications arise.
Hormonal fluctuations are common during pregnancy and are the leading cause of vomiting in early pregnancy. Some women may experience vomiting during the third trimester for the same reason. As the body begins to prepare for delivery, hormonal surges can cause a variety of symptoms, many of which mimic those of the early part of pregnancy.
In some cases, third trimester vomiting may occur just before labor begins. Diarrhea or loose stools are also common as the body prepares for delivery. Increased contractions, spotting or loss of the mucus plug may be further signs that the birth of the baby is near.
HELLP syndrome is a rare but potentially serious cause of vomiting in the third trimester. Vaginal bleeding, pain in the abdomen or shoulder, or a severe headache should be reported to a doctor for further evaluation. The patient will likely be tested for high blood pressure or the presence of protein in the urine. The most successful treatment for this condition is immediate delivery of the baby.
Pre-eclampsia is similar in nature to HELLP syndrome and causes high blood pressure, protein in the urine, and bloating. Rapid weight gain may also occur due to the severity of the tissue swelling. The health of the mother and baby may be in danger when this condition develops and childbirth is the only cure. If the pregnancy has not progressed enough for a safe delivery, the mother may be hospitalized and given medication in an attempt to reduce symptoms until the baby is no longer developed.
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