Why do we calculate the length of a pregnancy from the first day of a women’s last period?

1.42K views

Why do we calculate the length of a pregnancy from the first day of a women’s last period?

In: 3216

69 Answers

Anonymous 0 Comments

The imagined first day too. I remember they calculated the length and conception date with my first and I got pregnant apparently when me and my partner were in seperate countries. And no, there is no doubt it’s his child.

You are viewing 1 out of 69 answers, click here to view all answers.