Will a threatened miscarriage lead to a natural miscarriage if not treated to preserve the pregnancy?

Written by Du Rui Xia

Obstetrics

Updated on June 11, 2025

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During threatened miscarriage, some may end up having a miscarriage. For example, if active treatment for pregnancy preservation isn't administered in time during a threatened miscarriage, increased bleeding and abdominal pain may occur, which can easily lead to miscarriage. However, some cases of threatened miscarriage are relatively mild and may gradually reduce bleeding and eliminate abdominal pain through active pregnancy preservation treatment, rest, or enhanced nursing, marking successful pregnancy preservation. In cases of threatened miscarriage, if one decides not to keep the baby, the options of medication-induced abortion or surgical abortion are available to terminate the pregnancy as soon as possible, as delaying could potentially affect women's health.

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Written by Du Rui Xia

Obstetrics

58sec

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How long does it take to prevent a threatened miscarriage?

During threatened miscarriage, proactive treatment to preserve the pregnancy is required. However, the duration of such treatment varies from person to person and should be based on the specific circumstances of the patient. If the patient has a history of recurrent miscarriages, in the event of a threatened miscarriage, the pregnancy should be preserved for a longer period, at least until three months into the pregnancy when the fetal development has stabilized. However, if the patient experiences light vaginal bleeding without abdominal pain, and the condition is relatively mild, approximately a week of medication may be sufficient for improvement. It is recommended that one to two weeks after the bleeding stops, a visit to the hospital should be made to perform an abdominal ultrasound to check the embryo's growth.

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Written by Wang Xiu Mei

Obstetrics

1min 14sec

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How long does threatened miscarriage require bed rest?

Threatened miscarriage generally requires bed rest for about a week. A threatened miscarriage isn't an inevitable or natural miscarriage and may not necessarily result in the loss of the pregnancy. If the bleeding is minor and timely measures are taken to preserve the pregnancy, most cases won't progress to inevitable miscarriage. However, if measures to preserve the pregnancy are unsuccessful and not taken promptly, and if the bleeding is heavy and abdominal pain severe from the start, it will generally result in a miscarriage naturally within one to three days. During the treatment to preserve the pregnancy, it is crucial for the patient to rest in bed as much as possible, minimize physical activity to reduce the chances of miscarriage, and strictly avoid sexual activity to reduce stimulation to the uterus and fetus. Dietary nutrition should be increased, including more proteins, vitamin-rich foods, and high-fiber foods. It is important to actively prevent constipation, avoid spicy and stimulating foods, as well as cold, greasy foods, and maintain stable emotions.

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Written by Du Rui Xia

Obstetrics

46sec

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What should be noted for threatened miscarriage?

After the occurrence of threatened miscarriage, it is crucial to rest, and if possible, bed rest is recommended to reduce activity. Additionally, local hygiene must be maintained, frequently changing underwear to keep the area dry and fresh, preventing bacterial infection. Intercourse should be strictly avoided during a threatened miscarriage. It is important to observe vaginal bleeding and discharge. If any tissue-like materials are expelled, they should be preserved and brought to the hospital for examination to determine the nature of the expelled material. Nutrition should be enhanced by consuming light, easily digestible foods, including fresh fruits and vegetables.

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Written by Du Rui Xia

Obstetrics

42sec

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Early symptoms of threatened miscarriage

Premature birth refers to the condition where delivery occurs after the pregnancy has reached 28 weeks but before completing 37 weeks. Premature infants have a very high mortality rate. If a woman experiences prolonged back pain and a hardening of the lower abdomen during this time, it is due to contractions of the uterus. There can also be vaginal discharge of fluids, indicating early breaking of waters. Increased vaginal discharge, sometimes with traces of blood, might also indicate imminent premature birth; medical check-ups and treatment should be sought immediately.

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Written by Yue Hua

Obstetrics and Gynecology

46sec

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How long should one rest in bed for a threatened miscarriage?

The duration of bed rest for threatened miscarriage varies from person to person. It depends on the patient's clinical symptoms. Generally, one should rest until there is no vaginal bleeding for a week before starting to get out of bed and move around. This is because the typical clinical symptom of threatened miscarriage is minor vaginal bleeding. During this time, in addition to bed rest, it is advisable to take some progestogen medication for miscarriage prevention treatment. After successful miscarriage prevention, most people will see the disappearance of clinical symptoms. Then, one week after the symptoms disappear, they may gradually start getting out of bed but should still avoid intense physical activities.