The frequency of urination in the fourth month of pregnancy, if not accompanied by urinary pain and other symptoms, is normal, but if accompanied by urinary pain phenomenon is an abnormal situation. 1. Normal situation: women 4 months pregnant due to the rapid development of the fetus, the uterus increases significantly, the enlarged uterus will oppress the bladder and thus the phenomenon of frequent urination. However, there is usually no pain or discomfort, which is a normal physiological phenomenon and does not require special treatment. 2. Abnormal phenomenon: 4 months pregnant if the female urinary frequency symptoms are more serious, accompanied by urinary pain, hematuria and other symptoms, it is an abnormal situation, may be related to urinary tract infections and other factors. Need to go to the hospital in time to check the urine routine, if there is inflammation, it is recommended to take antibiotics as prescribed by the doctor, the use of specific drugs need to follow the doctor’s instructions.