Week 13 corresponds to the first week of the fourth month of gestation. It also corresponds to the last week of the first trimester of pregnancy.
Read the full article on: 13th week of pregnancy: end of first trimester ( 66).
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)