Fibroids in the uterus, which are relatively common noncancerous tumors, may increase risk of the following:
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Abnormal presentation of the fetus
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A mislocated placenta (placenta previa)
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Repeated miscarriages
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Bleeding during or after delivery (postpartum hemorrhage)
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Rarely, interference with the movement of the fetus through the vagina during labor
If women who have fibroids and have had a miscarriage or women who have large fibroids are thinking of becoming pregnant, they should talk with their doctor first. Then if needed, they can be treated before they become pregnant.
