Frequent urination may be an early symptom of pregnancy, in addition, also need to be alert to cystitis, urethritis and other diseases caused. 1. Early pregnancy: Early pregnancy pregnant women with the uterus increases, will gradually press the bladder, pregnant women will appear frequent urination symptoms. In addition, due to the rise of progesterone in pregnant women, some pregnant women will experience dizziness, fatigue, loss of appetite, nausea and other symptoms, but also gastrointestinal flatulence, constipation, frequent urination and other symptoms. 2. cystitis: pregnant women early pregnancy symptoms of frequent urination may also be caused by cystitis, cystitis due to bacterial and other pathogens caused by infection, the patient will appear frequent urination, painful urination, urinary urgency and other symptoms. 3. Urethritis: Urethritis is caused by pathogens such as gonococcus and nongonococcus bacteria, and patients will experience symptoms such as frequent urination, painful urination, and itching of the urethra. There are many reasons for frequent urination, and it is recommended that patients seek timely medical examination to clarify the cause of the disease and then follow the doctor’s instructions for treatment.