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Why does menstrual-like bleeding after childbirth have a bad odor?

By Marta Barranquero Gómez B.Sc., M.Sc. (embryologist).
Last Update: 12/13/2022

The vaginal bleeding that occurs in the 4 weeks after delivery is what is known as lochia.

This bleeding is a mixture of blood, placenta and uterine tissue. If this spotting has a stronger than normal odor, it may be due to a possible infection.

It may also be that intestinal contents have passed into the vagina. This usually happens if there has been a vaginal tear or some type of cut.

 Marta Barranquero Gómez
Marta Barranquero Gómez
B.Sc., M.Sc.
Embryologist
Graduated in Biochemistry and Biomedical Sciences by the University of Valencia (UV) and specialized in Assisted Reproduction by the University of Alcalá de Henares (UAH) in collaboration with Ginefiv and in Clinical Genetics by the University of Alcalá de Henares (UAH).
License: 3316-CV
Embryologist. Graduated in Biochemistry and Biomedical Sciences by the University of Valencia (UV) and specialized in Assisted Reproduction by the University of Alcalá de Henares (UAH) in collaboration with Ginefiv and in Clinical Genetics by the University of Alcalá de Henares (UAH). License: 3316-CV.