After pregnancy, the estrogen in the body will increase a thousand times on the original basis, so it will lead to an increase in cervical secretion and vaginal secretion, so it will show an increase in leukorrhea. But this kind of leukorrhea is still milky white, no odor or only a faint fishy smell, is a normal phenomenon after pregnancy, do not be nervous. However, if the leukorrhea is yellowish in color and accompanied by a bad smell, it is often caused by inflammation of the vagina. It is recommended to go to the hospital in this case, use a cotton swab to take the secretions from the vaginal opening, do routine tests on the leukorrhea, understand the infected pathogens through laboratory tests, and then give the appropriate treatment.