Normal leucorrhea is usually white and thin, or egg-white like, with a relatively small amount of stickiness and no fishy odor, called physiological leucorrhea. If the leucorrhea is yellow and watery, it may be due to bacterial infection, probably due to vaginal inflammation, so you need to visit the gynecology department of a public hospital. Internal gynecological examination plus routine examination of the leukorrhea will clarify whether there is vaginitis and the type of vaginitis, determine the cause of yellow watery leukorrhea, and according to the examination results, follow the advice of the attending doctor for timely treatment. If it is caused by vaginitis, it is usually not a self-healing disease and needs to be treated promptly to avoid the pathogenic bacteria in the vagina from infecting the uterine cavity and causing endometritis or even inflammation of the entire pelvis. However, you need to inform your doctor that you are now breastfeeding, so that the doctor will pay attention to the medication, which is usually vaginal medication plus gynecological lotion medication.