A lot of watery discharge in 19 weeks of pregnancy may be caused by changes in hormone levels in the body, vaginitis, cervical cancer and other reasons. 1. Changes in hormone levels: After pregnancy, due to the changes in hormone levels in the body, coupled with the fact that the blood vessels in the vagina are in a state of fullness after pregnancy, the environment in the vagina will also change. Therefore, there will be an increase in vaginal secretions, but other than that, there are no other uncomfortable symptoms. 2. Vaginitis: For women suffering from vaginitis, due to the stimulation of pathogenic bacteria, it may also lead to changes in the internal environment of the vagina, resulting in a lot of watery discharge, which may also be accompanied by vulvar itching, odor and other symptoms. 3. Cervical lesions: For patients suffering from cervical lesions, the symptom of watery discharge may also occur, but it may also be accompanied by a foul odor. After the symptoms of watery discharge in 19 weeks of pregnancy, it is recommended to go to the hospital in time, after the doctor’s interview, combined with the relevant items of examination and other symptoms of the patient, to comprehensively determine the cause of the disease, and then follow the doctor’s advice on the cause of the treatment.