Is there any odor or itching in the watery leukorrhea before menstruation? If there is itching, odor, and watery leucorrhea, it is usually caused by trichomoniasis. Under normal circumstances, it is normal to have more leucorrhea before and after menstruation, and slightly more leucorrhea during ovulation. The leukorrhea is also affected by the ovarian secretion function and changes cyclically. It is normal to have a little more leukorrhea before your period, but if you have watery and smelly leukorrhea, this indicates an inflammatory infection. This is not a normal leucorrhea. If there is no itching, just a slight increase in watery leucorrhea, this is not a big problem. The body itself has the ability to overcome the disease, first wash with water and observe to see if it can be good. If it is not good, you can use oral medication, or topical treatment can also be used.