Molar Pregnancy: Symptoms, Diagnosis, and Concerns - Obstetrics and Gynecology

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Molar pregnancy


Hello Doctor: I would like to ask, is a molar pregnancy also considered a type of pregnancy? Can it be undetected in the early stages of pregnancy? How long does it take to find out? If one does not rest well in the early stages of pregnancy, will it affect the fetus? I have been feeling very fatigued but cannot rest properly.
If conception occurred on March 15, when can we expect to see a heartbeat? I did not see a heartbeat during my check-up.
When is the estimated due date? If I continue to feel very tired, will it have any consequences? Thank you.

Sha Sha, 20~29 year old female. Ask Date: 2004/04/22

Dr. Zhan Deqin reply Obstetrics and Gynecology


It is also a type of pregnancy, but it is an abnormal pregnancy.
A check-up should be able to detect it at 6 to 7 weeks.
During pregnancy, avoid excessive fatigue; light work is acceptable, but strenuous activities can lead to miscarriage.
Around 7 weeks after conception, a heartbeat can be detected (the size of the fetus is calculated based on the last menstrual period, not the date of conception).
The estimated due date is calculated by adding 280 days to the last menstrual period.
If you are feeling excessively tired, it is advisable to consult a physician to check for conditions such as gestational hypertension, hepatitis, or diabetes.

Reply Date: 2004/04/22

More Info


Molar pregnancy, also known as hydatidiform mole, is indeed a type of pregnancy, but it is not a normal pregnancy. It occurs when there is an abnormal growth of trophoblastic cells, which are the cells that normally develop into the placenta. This condition can be classified into two main types: complete and partial moles. A complete mole occurs when an egg with no genetic material is fertilized by a sperm, leading to the growth of abnormal tissue instead of a viable fetus. A partial mole involves the fertilization of a normal egg by two sperm, resulting in some fetal tissue but still leading to abnormal placental development.

Symptoms and Diagnosis:
In the early stages, a molar pregnancy may not present obvious symptoms, which can make it challenging to detect. Common symptoms include abnormal vaginal bleeding, often described as "grape-like" tissue passing from the vagina, severe nausea and vomiting, and an unusually high level of hCG (human chorionic gonadotropin) in the blood. These symptoms can sometimes be mistaken for a normal pregnancy or miscarriage.

Diagnosis typically involves a combination of ultrasound and blood tests. An ultrasound may reveal a characteristic "snowstorm" pattern in the uterus, indicating the presence of a molar pregnancy. Blood tests measuring hCG levels can also help confirm the diagnosis, as levels are often significantly elevated in cases of molar pregnancy.

Concerns and Management:
If you suspect you might have a molar pregnancy, it is crucial to seek medical attention promptly. Molar pregnancies can lead to complications, including gestational trophoblastic disease, which can be malignant in some cases. Regular follow-up is essential to monitor hCG levels after treatment to ensure that all molar tissue has been removed and to check for any signs of persistent disease.

Regarding your concerns about fatigue and the impact of not resting well during early pregnancy, it is important to note that fatigue is a common symptom in early pregnancy due to hormonal changes and the body's increased energy demands. While it is essential to listen to your body and rest when possible, not getting enough rest in itself is unlikely to cause harm to the developing fetus. However, chronic fatigue can affect your overall well-being, so finding ways to manage stress and fatigue is important.

If you conceived on March 15, you would typically expect to see a fetal heartbeat around 6 to 7 weeks of gestation during an ultrasound. The estimated due date can be calculated based on the first day of your last menstrual period, which is usually about 40 weeks from that date. If you are unsure about your due date or have concerns about your pregnancy, it is best to consult with your healthcare provider for personalized advice and monitoring.

In summary, while molar pregnancies are a type of pregnancy, they are abnormal and require careful management. If you have any symptoms or concerns, please reach out to your healthcare provider for further evaluation and support. Regular prenatal care is essential for monitoring the health of both you and your baby throughout your pregnancy.

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