the 1st day of last LMP or after fertilization?
Its for upcoming fetus so after fertilization
but in the video when mam discussed about epiblast migration she told 3 weeks of “pregnancy”.
Embryological events are by fertilisation date
so when we say that at 14-16 weeks uterine cavity is obliterated by the growing fetus, does that also count from fertilization date?
no that is a maternal event, I believe its from 14-16 of lmp
all events mentioned in weeks are calculated from first day of LMP and all events mentioned in days are calculated from day of fertilisation
thank you so much mam! Mam is it true irrespective of fetal and maternal events?