The second trimester lasts from week 13 through 28. At the same time, its arms, legs, brain, spinal cord, and nerves start to form. The changes may include:ДЄccording to the American College of Obstetricians and Gynecologists (ACOG), during the first month of pregnancy, the baby's heart and lungs begin to develop. 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 trimesterВ 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 вЂ“ 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.Д«abies 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. But if you're impatient to know when your baby will arrive, then our pregnancy calculator tool gives you an estimate due date without the wait.The length of healthy pregnancies is between 37 and 42 weeks. HereВ you will be given a scan and receive an accurate date for your baby's birth. You will have your first appointment with the midwife, the 'booking appointment', between 8 weeks and 12 weeks pregnant. Will I get a more accurate due date later in the pregnancy? If you have the baby on yourВ due date, yourВ babyВ has been growing for 38 weeks, not 40, but you are still classed as 40 weeks pregnant. Your period and ovulation are counted as the first two weeks of pregnancy. The pregnancy calculator gives you an approximate due date, which it works out your due date by adding 280 days (40 weeks) to the first day of your last menstrual period (assuming a 28 day cycle, it is adjusted for longer or shorter cycles). This weekly email gives you fun pregnancy facts, useful tips and great recipe ideas to help you and your baby have the healthiest possible pregnancy.ДЄre you in early pregnancy? Find out all you need to know about week 4 onwards here. You will then receive your estimated due date and the option to sign-up to our pregnancy email. ToВ findВ your pregnancy due date you just need to select the date ofВ the first day of your last period on our pregnancy calculator tool and click 'submit.'

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