Therefore, the only way to know if you have gone through menopause is if you have not had your period for one year. (And it's not menopause if your periods stop for some other reason, like being sick.) The average age of menopause is 51, but for some women it happens as early as 40 or as late as 55. After you go through menopause, you are considered in the post-menopausal stage of your life.
The umbilical cord develops from and contains remnants of the yolk sac and allantois (and is therefore derived from the zygote). It forms by the fifth week of fetal development, replacing the yolk sac as the source of nutrients for the fetus.
Your Baby's Development. Your baby is constantly adapting to life inside the uterus. By this week, the umbilical cord has formed. It will be your babyâs connection to you throughout your pregnancy, providing oxygen and nourishment for your baby and disposing of your baby's wastes. In addition, your baby's digestive tract and lungs continue to form.