Why does embryonic arrest cause back pain?

Written by Du Rui Xia
Obstetrics
Updated on April 03, 2025
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After the embryo's development stops, the uterus will induce contractions, leading to pain in the lower back and abdomen, which is considered normal.

Following the cessation of the embryo's development, there will be episodic pain in the lower abdomen accompanied by back pain, primarily to facilitate the process of embryo cessation and to promote the expulsion of the gestational sac. In such cases, it is important to rest, observe the expulsion of embryonic tissue, and be mindful of vaginal bleeding. Rest should be prioritized, avoid overexertion, strengthen nutrition, maintain a regular routine, and, if necessary, undergo a uterine cleaning procedure.

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Written by Liu Wei Jie
Obstetrics
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Embryonic arrest generally occurs at what time?

First, let's discuss what embryonic arrest means. There are two scenarios of embryonic arrest. The first scenario is where the embryo initially does not develop well, leading to the cessation of development in the very early stages of pregnancy. The second scenario occurs when the embryo initially develops well, but after a period, embryonic arrest happens. Therefore, embryonic arrest generally occurs during early pregnancy but can also occur later, around the middle of early pregnancy. It can happen at any time, but it is most commonly identified after 8 weeks. However, some cases involve the presence of an embryonic bud and heart tube, and embryonic arrest can still occur even at 10 or 11 weeks.

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Written by Zhang Lu
Obstetrics
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Can you have intercourse with an arrested embryo development?

It is not recommended to have sexual intercourse when embryo arrest occurs. Embryo arrest, also known as missed miscarriage, refers to the abnormal development of the gestational sac during early pregnancy, and no fetal heartbeat is detected on an ultrasound by the ninth week of pregnancy. Once embryo arrest is diagnosed in clinical practice, a dilation and curettage surgery should be performed as soon as possible to minimize the impact on the fetus. However, during embryo arrest, since the gestational sac itself is not developing normally and is unstable, it is not advisable to have sexual activity. Sexual activity could stimulate the uterus to contract, leading to bleeding, which is not conducive to managing the embryo arrest. Moreover, sexual activity can easily lead to gynecological inflammation. If sexual activity causes gynecological inflammation, it is necessary to treat the inflammation before proceeding with the abortion, which can delay the process. Therefore, it is not recommended to have sexual intercourse during embryo arrest.

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Written by Zhao Li Li
Obstetrics
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What will the vaginal discharge be like if the embryo stops developing?

During prenatal check-ups, if there are indications that embryonic arrest has occurred, timely symptomatic treatment is still necessary. Normally, embryonic arrest does not affect vaginal discharge, so the nature of the discharge alone cannot be used to determine whether the embryonic development in the uterus is healthy. After confirming embryonic arrest, it is generally advised to promptly undergo an artificial abortion to completely expel the embryo from the body, to avoid long-term retention which could lead to disorders such as coagulation dysfunction. After the miscarriage due to embryonic arrest, further examination to determine the specific cause of the arrest is necessary, in order to treat the condition promptly and appropriately.

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Written by Du Rui Xia
Obstetrics
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Is a painless abortion painful for a missed miscarriage?

After an embryonic arrest occurs, it is necessary to terminate the pregnancy promptly, and a painless abortion surgery can be chosen. During the abortion surgery, anesthetic drugs are administered, usually intravenous anesthesia. During the procedure, the patient is in a sleeping state, completely unconscious, and therefore does not feel any pain. Generally, a few minutes after the surgery, the effect of the anesthetic wears off quickly and the patient will wake up. Therefore, patients can rest assured, especially for women who are particularly sensitive to pain, using painless abortion can reduce their fear and alleviate some of the pain during the procedure.

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Written by Du Rui Xia
Obstetrics
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Why is there no bleeding or abdominal pain when an embryo stops developing?

After the occurrence of embryonic arrest, some pregnant women may not experience any uncomfortable symptoms, nor do they have vaginal bleeding or abdominal pain. Embryonic arrest is detected through ultrasound examination, by observing the shape of the gestational sac and whether there is an embryo and fetal heartbeat present. If there is still no fetal heartbeat after eight weeks of pregnancy, it is determined that fetal development has ceased, or if the size of the embryo does not grow progressively with the gestational weeks, it is also judged as embryonic arrest. At this time, timely treatment should be performed, and one can choose either surgical abortion or medical abortion, rather than waiting and observing.