The bleeding that some women have at the end of the third week of gestation corresponds to the implantation bleeding caused by the adhesion of the embryo in the endometrium. This bleeding is not very abundant, sometimes it is simply a stain that lasts one or two days. If it is an abundant bleeding, it could be due to an advance of the menstrual period.
Is it normal to bleed in the third week of pregnancy?
By Zaira Salvador B.Sc., M.Sc. (embryologist).
Last Update: 02/28/2017
Bachelor's Degree in Biotechnology from the Technical University of Valencia (UPV). Biotechnology Degree from the National University of Ireland en Galway (NUIG) and embryologist specializing in Assisted Reproduction, with a Master's Degree in Biotechnology of Human Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI)