Your period stopped - that is a clear sign that you are pregnant. Your emotions might range from excitement to anxiety. These changes affect every organ system in your body, and their symptoms may occur even in the very first weeks of pregnancy. In this time, your body undergoes many changes triggered by hormones. During this time span, the possibility of a miscarriage (natural death of an embryo or fetus) or a severe disability is the highest. The first trimester is from week 1 to week 12 and includes the conception (when a sperm fertilizes an egg). Pregnancy is divided into three trimesters (each lasts three months). White European women also tend to have naturally longer pregnancies than African-Caribbean or Asian women. Moreover, tall women tend to have longer pregnancies than shorter women. Extended implantation determines longer gestation from implantation to birth. The length of pregnancy may also be influenced by how long it took the embryo to implant after conception. Multiple pregnancies, like twins and triplets, tend to be born prematurely – the higher number of babies, the earlier they are usually born. Childbirth after week 42 is called a prolonged pregnancy and may carry a higher risk of complications. Factors like the rise in maternal obesity and age may contribute to early births. Once the child is delivered, medical staff assesses its health with on-site APGAR score.īabies born before week 37 are considered premature and usually need extra medical care for some time. There is a 5-week time span when a baby may arrive and would be considered as born in term. It’s just a way to provide a window of time in which you are likely to go into labor.The length of healthy pregnancies is between 37 and 42 weeks. Even with IVF and ultrasound measurements, no due date is a guarantee. How accurate are IVF due dates?ĭue date calculations may vary regardless of whether you conceived naturally or via IVF. *If the blastocysts’ age is more than 5 days, you need to subtract their exact age.
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