Hello! Tell or say please since what day it is necessary to count weeks we take...

[marina]

Hello! Tell or say please since what day it is necessary to count weeks of pregnancy. Thanks

[evromedprestizh]

Obstetric term is considered from 1 day of last menses at a regular cycle. The doctor of the maximum or supreme category akusher-ginekolog-endocrinologist Usatenko Feodor Nikolaevich.