If a pregnant mother is hospitalized on birth control for bleeding, there is no specific data to support the fact that the specific conditions of the pregnant woman and the fetus are different, resulting in very large individual differences in time.
If the condition of the pregnant woman is improved and stabilized after the bleeding is preserved, such as simple contractions, the bleeding is very small, and the bleeding stops after the preservation treatment, the time of hospitalization for preservation of the fetus will be relatively shorter.
If the condition is complicated and unstable, such as the combination of low amniotic fluid, fetal hypoxia and many other conditions, it may take several months or even longer.
Pregnant women who are bleeding to preserve the fetus are advised to go to a regular hospital, cooperate with the doctor to complete the relevant examinations, clarify the cause and actively deal with it, so as not to delay the condition.