After taking medication for fetal demise, why does the amount increase significantly on the first day and then disappear?

Patient's question:

After taking the medication for miscarriage, I haven't had my period for a month, and the amount is very little. The first two days, there was only brown discharge, and it didn't come out. Starting from the third day, blood clots began to appear, and the amount was more, but it only lasted for one day. By the fourth day, it became much less, and by the seventh day today, it was completely clean. I didn't have a D&C after taking the medication for miscarriage, so I should have had a lot of blood clots, but why did the amount only last for one day and then stop?

Doctor's answer:

First, the duration of bleeding does not equate to the amount of gestational sac and decidua expelled. In your case, the gestational sac has been expelled. If the decidua detaches completely in one go, it may result in short-term heavy bleeding, which will significantly decrease afterward. If the decidua does not detach completely, it may lead to prolonged bleeding, potentially requiring a D&C procedure. On the other hand, if the villi are not expelled completely, it may cause heavy bleeding, even life-threatening.
Second, the thickness of the decidua varies among individuals during early pregnancy, and before 40 days of gestation, the villi are not as firmly attached to the endometrium, resulting in longer bleeding duration for those with thicker decidua. Pregnancies beyond 6 weeks also tend to have longer bleeding periods.
Additionally, the response of the decidua to mifepristone varies among individuals. Those who are more sensitive to it tend to have better outcomes with less bleeding. Overall, you may have had a shorter pregnancy duration, thinner decidua, and relatively higher sensitivity to mifepristone, which explains the effective outcome.
Of course, it is important to have an ultrasound to check for any residual tissue. I recommend getting one to rule out the possibility of retention.
The Motherwort (Leonurus cardiaca) capsules should be taken after completing the biochemical preparation (). Both have similar effects, but the former is primarily focused on detoxification and anti-inflammation, while the latter is more about blood production and tissue repair.

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