Uterine fibroids may cause the embryo to stop developing, for example, if the fibroids are growing in the uterine cavity, they will affect the embryo’s growth and development. Because fibroids compete with the embryo for position within the uterine cavity, there is a possibility that they may cause the embryo to stop developing and miscarry, so when fibroids are present, you will also need to go to the hospital for an ultrasound to further evaluate the situation. If the fibroid is growing inside the uterine cavity, it is safer to have a hysteroscopic surgery to remove the fibroid before getting pregnant. If the presence of fibroids in the uterine cavity has been pregnant, it is recommended to have more rest, appropriate activities, regular pregnancy tests, if the pregnancy-related examinations are no problem, no abnormal conditions are safe. If there is vaginal bleeding, abdominal pain, you need to go to the hospital in time, if necessary, birth control symptomatic treatment, safer.