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www.quora.com/Why-do-people-say-a-pregnancy-is-nine-months...

A pregnancy is measured from the first day of the last menstruation. This means she is already 2 weeks “pregnant” when she ovulates and this leads to a pregnancy. The total time for a pregnancy is 280 days, which are 10 lunar months. Translated into the Gregorian calendar this is the equivalent of 9 calendar months (give or take).

www.sciencedaily.com/releases/2013/08/130806203327.htm

The length of a human pregnancy can vary naturally by as much as five weeks, according to new research. The length of a human pregnancy can vary naturally by as much as five weeks, according to ...

en.wikipedia.org/wiki/Pregnancy

Pregnancy, also known as gestation, is the time during which one or more offspring develops inside a woman. A multiple pregnancy involves more than one offspring, such as with twins. Pregnancy can occur by sexual intercourse or assisted reproductive technology. Childbirth typically occurs around 40 weeks from the last menstrual period (LMP).

www.answers.com/Q/How_long_is_a_normal_human_pregnancy

How long is a normal human pregnancy? SAVE CANCEL. already exists. Would you like to merge this question into it? MERGE CANCEL. already exists as an alternate of this question. ...

www.webmd.com/.../typical-pregnancy-now-39-weeks-not-40

March 23, 2006 -- The most common length of a pregnancy in the U.S. is a week shorter than it was just over a decade ago, dropping from 40 weeks to 39 weeks, according to a new analysis from the ...

parentingpatch.com/how-long-is-pregnancy-days-weeks-months...

The average human pregnancy is 40 weeks long. However, a pregnancy is considered term between 37 weeks and 41 weeks 6 days. Babies born on or before 36 weeks 6 days are consider preterm or premature. Babies born between 37 weeks and 38 weeks 6 days are considered early term. Babies born between 39 ...

www.womenshealth.gov/pregnancy/youre-pregnant-now-what/...

If you have been pregnant before, you might feel differently this time around. Just as each woman is different, so is each pregnancy. Second trimester (week 13–week 28) Most women find the second trimester of pregnancy easier than the first. But it is just as important to stay informed about your pregnancy during these months.

www.babycentre.co.uk/x25015771/how-long-is-a-normal-pregnancy

How long is a normal pregnancy? Expert Answer. The BabyCentre editorial team. ... Length of human pregnancy and contributors to its natural variation. Hum Reprod 28 ... My 1st child was long overdue, i was 42 weeks pregnant and in labor for 48 hours and im short but did have to get a emergency c section as i couldnt dilate more than 4 cm. I ...

www.disabled-world.com/calculators-charts/due-date.php

Human female pregnancy lasts 40 weeks on average. However, do not forget that the average month is 4 weeks and several days long, not four weeks exactly. It is for this reason that doctors calculate how many weeks pregnant you are, as measuring pregnancy by weeks is a far more accurate means to determine length of pregnancy.

www.betterhealth.vic.gov.au/health/healthyliving/baby-due-date

The unborn baby spends around 37 weeks in the uterus (womb), but the average length of pregnancy, or gestation, is calculated as 40 weeks. This is because pregnancy is counted from the first day of the woman’s last period, not the date of conception which generally occurs two weeks later, followed by five to seven days before it settles in the uterus.