Pregnancy dating by lmp
Most women do not know the precise moment of conception; that is why, in the interest of simplicity, calculations are done from the first day of the most recent menstruation.That is, however, not quite right medically because ovulation, when an egg cell can first be fertilized, takes place only about 14 to 16 days after the start of the period.Then it is fairly simple to determine the sex since the sexual organs are clearly developed.As precise as modern ultrasound technology may be and as experienced as a doctor may be, mistakes and errors happen again and again.Simply enter the day of your last period and the length of your menstrual cycle and the pregnancy calendar will show you all of the important information. Or do you want to find out when your fertile days are? A normal pregnancy lasts 40 pregnancy weeks (PW for short) or 281 days.Thus, the first day of the most recent menstruation is considered to be the start and the delivery date to be the end of the 40 weeks of pregnancy.Many parents worry about the health of the baby and naturally also about the birth itself.Against this background, getting the baby’s sex right is rather secondary in importance.
In countries like China, India, and South Korea – but also Eastern Europe and Africa, the question of sex in these traditionally patriarchal societies has a totally different meaning. Some female fetuses are targeted for abortion (“gendercide” or “femicide”).
For offspring, the female body starts to produce distinct hormones, beginning with the 8th week of pregnancy. But the formation of the sex organs is a slow process.
It is only after the 12th week that it is even possible to identify the sexual organs.
At the beginning of pregnancy, the body starts to produce the pregnancy hormone h CG (human chorionic gonadotropin).
Six to nine days after nidation of the fertilized egg, the hormone can already be detected in the blood.
Professional Reference articles are written by UK doctors and are based on research evidence, UK and European Guidelines.