Pregnancy is the fertilization and development of one or more offspring, known as an embryo or fetus, in a woman's uterus. In a pregnancy, there can be multiple gestations, as in the case of twins or triplets. Childbirth usually occurs about 38 weeks after conception; in women who have a menstrual cycle length of four weeks, this is approximately 40 weeks from the start of the last normal menstrual period (LNMP). Human pregnancy is the most studied of all mammalian pregnancies. Conception can be achieved through sexual intercourse or assisted reproductive technology.
An embryo is the developing offspring during the first 8 weeks following conception, and subsequently the term fetus is used until birth. 40% of pregnancies in the United States and United Kingdom are unplanned, and between a quarter and half of those unplanned pregnancies were unwanted pregnancies. Of those unintended pregnancies that occurred in the US, 60% of the women used birth control to some extent during the month pregnancy occurred.
In many societies’ medical or legal definitions, human pregnancy is somewhat arbitrarily divided into three trimester periods, as a means to simplify reference to the different stages of prenatal development. The first trimester carries the highest risk of miscarriage (natural death of embryo or fetus). During the second trimester, the development of the fetus can be more easily monitored and diagnosed. The beginning of the third trimester often approximates the point of viability, or the ability of the fetus to survive, with or without medical help, outside of the uterus.
Other articles related to "pregnancy":
... When the woman's life or health is endangered by the continuation of pregnancy, When the pregnancy is a result of a criminal act, or When the fetus is seriously malformed ... In addition, persuading a woman to carry out illegal termination of her pregnancy is a criminal act in the same way as illegal abortion is ...
... Therefore, a newly married couple learns that they are half-siblings, with a pregnancy already underway ... her that if the fetal weight is still low, they may be able to terminate the pregnancy due to her situation ... The couple spend the rest of the pregnancy from their friends and family ...
... pregnancies have occurred, and there are several known cases of older women carrying a pregnancy to term, usually with in vitro fertilization of a donor egg ...
... twins can be diagnosed using standard ultrasound equipment during mid-pregnancy ... Many parents make the difficult decision to terminate pregnancy due to the prognosis and quality of life issues that the twins would have to deal with ... a successful separation can vary a parents likelihood of terminating pregnancy ...
... and children is not as impacted by mothers who stopped alcohol consumption early in pregnancy, even if it was resumed after giving birth ... exposure during the second-trimester of pregnancy showed lower academic performance and problems with reading, spelling, and mathematical skills ...
Famous quotes containing the word pregnancy:
“There are highly gifted spirits who are always infertile simply because, owing to a weakness in temperament, they are too impatient to wait out their pregnancy to term.”
—Friedrich Nietzsche (18441900)
“Back in the days when men were hunters and chestbeaters and women spent their whole lives worrying about pregnancy or dying in childbirth, they often had to be taken against their will. Men complained that women were cold, unresponsive, frigid.... They wanted their women wanton. They wanted their women wild. Now women were finally learning to be wanton and wildand what happened? The men wilted.”
—Erica Jong (b. 1942)
“Her girlfriends asked that innocent,
What? What appeals to you?
when her pregnancy cravings appeared.
Her gaze merely fell
on her husband.”
—Hla Stavhana (c. 50 A.D.)