Fibroids in the uterus, which are relatively common noncancerous tumors, may increase risk of the following:
- Preterm labor
- Abnormal presentation of the fetus
- A mislocated placenta (placenta previa)
- Repeated miscarriages
- Bleeding during or after delivery (postpartum hemorrhage)
- 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.