Depending on the ultrasound scan of the first trimester of pregnancy, the obstetrician may change the woman's last menstrual period (LMP) date, even if the pregnant woman is sure when it was. The reason for this is that ovulation does not always occur on day 14 of the menstrual cycle, so fertilisation may occur earlier or later and, therefore, the baby's development may not correspond to the indicated LMP.
In this case, the new LMP indicated by the specialist should be used in the gestogram.
Read the full article on: What is a gestogram or pregnancy wheel and how is it used? ( 50).
Silvia Azaña Gutiérrez
B.Sc., M.Sc.
Graduate in Health Biology from the University of Alcalá and specialized in Clinical Genetics from the same university. Master in Assisted Reproduction by the University of Valencia in collaboration with IVI clinics.
License: 3435-CV
