Knowing that you may have to stop progesterone supplementation can be worrying, especially if you have undergone fertility treatment or experienced pregnancy loss in the past. Many women worry about when to stop taking progesterone during pregnancy, and whether it will affect the baby. In most pregnancies, progesterone supplementation is discontinued between 9 and 12 weeks, when the placenta takes over the production of hormones. Progesterone is an essential hormone that supports early pregnancy by maintaining the uterine lining and preventing early contractions. Progesterone is often prescribed after IVF or IUI treatment or in women at risk of recurrent miscarriage. In most cases, progesterone is only required temporarily until the body can produce it on its own. It is essential to note that progesterone supplementation is usually safe when discontinued under medical guidance. This is based on the progress of pregnancy, hormone levels, and individual risks. Having knowledge about progesterone and when it is usually discontinued can help alleviate fear and confusion during early pregnancy.

Progesterone is an essential hormone in the first trimester of pregnancy. It helps to prepare and maintain the uterine lining to support the implantation and growth of the embryo. It also prevents uterine contractions that may otherwise interfere with implantation. Progesterone supplementation can be beneficial for some women to lower the risk of miscarriage, particularly in women with recurrent pregnancy loss or those undergoing assisted reproductive therapy. Progesterone is usually taken after IVF and IUI because the body’s progesterone levels may be low in early pregnancy.
Progesterone can be administered in a variety of ways:
The choice of progesterone administration depends on clinical requirements, absorption, and patient tolerance.
Knowing when to stop taking progesterone during pregnancy requires an understanding of a critical biological change called the luteal-placental shift. In early pregnancy, progesterone is secreted by the corpus luteum (ovary). However, when the pregnancy reaches 8-10 weeks, the placenta gradually assumes the progesterone secretion role. The typical progression of pregnancy, as followed by most physicians, includes:
Some low-risk pregnancies can discontinue supplementation at this point
Most pregnancies occur during this period, especially those conceived through IVF
Used in some higher-risk pregnancies
Studies and clinical experience have demonstrated that, once the placental production of progesterone is initiated, there will be no need for external supplementation.
However, the timing of when to stop progesterone supplementation is dependent on:

One of the most common questions that women ask is: What happens if you stop taking progesterone while pregnant?
The answer to this question depends on the timing of when the progesterone is stopped.
If the placenta has assumed production of hormones
If stopped too early (before the placenta takes over)
It is essential to note that stopping progesterone supplementation will not automatically result in miscarriage. Miscarriage is generally associated with chromosomal abnormalities or developmental problems and not with the withdrawal of progesterone supplementation.
Note: Never stop progesterone without medical advice.
One of the most common fears that women have when they become pregnant is: will I miscarry if I stop taking progesterone?
Progesterone helps in supporting early pregnancy, but miscarriage is most often due to chromosomal abnormalities and not due to changes in hormone supplementation.
If progesterone is discontinued at the medically recommended time, then:
In IVF pregnancies, discontinuing progesterone at 10-12 weeks is common in many medical protocols once placental hormone production is stable
If your doctor recommends discontinuing progesterone, then it is likely that your pregnancy is going along well, and your body is producing enough progesterone on its own.
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There is no one-size-fits-all answer. Some doctors discontinue progesterone abruptly while others taper the progesterone dose gradually. The most important thing is to follow your doctor’s recommendations, as medical plans are individualised.
You should contact your doctor if you experience any of the following symptoms:
Progesterone is continued until 10-12 weeks, sometimes beyond, as per clinic guidelines.
Progesterone is continued for a longer period as a precautionary measure by doctors.
Treatment is tailored according to the patient’s medical history and hormone levels.

Cloudnine is recognised for its unique approach of providing evidence-based obstetric care, along with personalised pregnancy care. The hospital is centred on providing individualised hormone support plans, as opposed to a standardised plan. Their staff comprises seasoned obstetricians, fetal medicine specialists, and fertility specialists who work together to provide safe guidance on medication. Cloudnine also prioritises patient education, where they inform and explain about the importance of taking certain medications, such as progesterone and when they can be discontinued safely. Their systematic approach to monitoring, sophisticated diagnostic tools, and continuity of care help alleviate concerns for women with high-risk and fertility-related pregnancies.
Progesterone plays a crucial role in early pregnancy, but supplementation is only for a short period. In most instances, your doctor may advise you to stop progesterone supplementation between 9 to 12 weeks of pregnancy, once the placenta takes over the role of progesterone production. If your doctor advises you to stop progesterone, it is an indication that your pregnancy is going along smoothly. Never stop progesterone on your own, but always follow your doctor’s advice.
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Progesterone can be discontinued safely if done at the right time (after the onset of placental hormone secretion), and nothing will happen, and the pregnancy will proceed normally.
Current evidence suggests progesterone supplementation in prescribed doses is generally safe during early pregnancy.
Progesterone relaxes the muscles and slows down digestion, which may cause bloating or constipation.
A sudden fall in progesterone levels in early pregnancy may pose a risk in susceptible pregnancies, but most miscarriages are chromosomally mediated and not due to progesterone alone.