When fibroids enlarge, they may put pressure on the bladder, but they do not usually cause blood in the urine. If the fibroid is located under the plasma membrane, it is relatively more likely to exert pressure on the bladder, and it is more likely to exert pressure on the surrounding tissues when the fibroid is larger than 5cm. If the bladder is compressed, there will be abdominal pain, frequent urination, urinary urgency, incomplete urination, difficulty in urination and other uncomfortable symptoms, which is also the reason why uterine fibroids need to be actively treated when they are too large, but blood in the urine will not usually occur. If uterine fibroids accompanied by blood in the urine, it may be the presence of urinary tract stones, inflammation, tumors and other reasons, then it is recommended to go to the hospital in a timely manner, under the guidance of the doctor to take the appropriate method of treatment, to prevent delays in the condition.