How Fibroids Can Affect Pregnancy

How Fibroids Can Affect Pregnancy

Generally, the woman can get pregnant even if she has a fibroid, and this does not usually bring risks to the mother or the baby. However, when the woman becomes pregnant with a myoma, it can cause bleeding due to hormonal changes typical of pregnancy, which can cause myoma to grow.

How Fibroids Can Affect Pregnancy

Symptoms in pregnancy arise only when there are large, numerous fibroids in the inner part of the uterus, and this may even become a risky pregnancy. The main treatment done is rest and use analgesic medications such as paracetamol and ibuprofen.

Risks of myoma in pregnancy

Myoma in pregnancy is not usually severe, but complications may occur in women who have a large myoma, especially if it is located inside the uterus, such as intramural myoma. The risks can be:

  • Abdominal pain and colic, which can appear at any time during gestation;
  • Abortion, happens in the first trimester of pregnancy, because some fibroids can cause intense bleeding;
  • Placental abruption, in cases of fibroids that occupy the site or make it difficult to attach the placenta to the wall of the uterus;
  • Limitation of growth of the baby, by very large fibroids that occupy or push the uterus;
  • Preterm delivery, because delivery can be anticipated in large fibroids, which cause bleeding and cramping.

The few cases where these things happen are more delicate and should very well accompanied by the obstetrician, with more frequent visits and more tests, such as ultrasound.


It is not always necessary to treat the fibroid in pregnancy, but in any case, is indicated for rest and use of pain medications such as acetaminophen or ibuprofen for the woman who has symptoms of pain and light bleeding.

Surgery for myoma removal may be indicated during pregnancy, and may be done by the belly or vagina. It is usually indicated in cases of fibroids that cause pain and persistent bleeding or that are large enough to cause risks to the baby or woman. But even in these cases, the decision to perform the surgery should be made when the risk of surgery is less than the risk of the fibroid remaining inside the uterus.


Since most cases are safe for the mother or baby, birth may be normal, especially in women with small fibroids who have few symptoms. A cesarean section can be indicated by the obstetrician in cases of pregnant women with fibroids who:

  • They bleed or are at risk of bleeding, causing a greater chance of hemorrhage at delivery;
  • They are very painful , causing pain and suffering to the woman during childbirth;
  • They take up a lot of space in the uterus , making it difficult for the baby to leave;
  • They involve a large part of the wall of the uterus , making it difficult or altering its contraction.

The choice of delivery type can be discussed personally with the obstetrician, taking into account the size and location of myoma, as well as the woman’s desire to have a normal delivery or cesarean delivery.

One advantage of having a cesarean section is the possibility of removing the fibroid during labor, especially if it is outside the uterus.