The appearance of fibroids is usually caused by the stimulation of estrogen and progesterone in the body. After pregnancy, the hormones in the body will change a lot, so the fibroids will be easily degenerated, and the main degeneration method is red degeneration, but it is unlikely that the fibroids will become glassy or cancerous during pregnancy. If there is no clinical symptom, you can observe it and review the ultrasound dynamically to see the size change of fibroids, then you can choose to deliver by normal delivery after full term, or you can choose to remove fibroids at the same time if you choose to deliver by cesarean. However, if the fibroids degenerate during pregnancy and symptoms appear, such as abdominal pain, fever, etc., there may be preterm labor or miscarriage, which requires hospitalization for symptomatic treatment and fetal preservation, which cannot be observed at home.