Fibroids do not cause dizziness and nausea in most cases. If fibroids cause increased menstrual flow, irregular vaginal bleeding, or even heavy bleeding, causing more serious anemia, they may cause dizziness and nausea, which need to be diagnosed by routine blood tests at the hospital and, if necessary, blood pressure monitoring. The main symptom of uterine fibroids is pain in the lower abdomen, which may be continuous or intermittent. Uterine fibroids compress the bladder and cause frequent, urgent and incomplete urination. Compression of the rectum may lead to constipation, and compression of the nerves in the lumbar region may cause back pain. It may also affect the changes of menstruation, such as increased menstrual volume, prolonged periods and irregularity of menstrual cycles, which can be cured by surgical removal of fibroids.