40 weeks, sometimes 42 weeks is NOT nine months. Do anybody know who decided that pregnancy was only nine months
2007-09-18 16:48:40 · 15 answers · asked by 2fine4u 6 in Pregnancy & Parenting ➔ Pregnancy
Anybody know WHO started the pregnancy calendar.
2007-09-18 17:28:43 · update #1
the first pregnant woman who decided to tell people how long it took to go through that agony
2007-09-18 16:57:08 · answer #1 · answered by Anonymous · 0⤊ 1⤋
40 weeks is ten lunar months, but a pregnancy generally lasts nine calendar months.
With calendar months (other than February) having two or three extra days (4 x 2 = 8/7 x 3 = 21, and 8 plus 21 = 29 days, which just about explains the different between the 10 lunar months and 9 calendar months). Of course, then there's the thing where you're considered 4 weeks along even when - really - the conception took place a week or two after the last period....
A baby who is born at 42 weeks (when there's no question about dates) has arrived late.
In answer to your question, its generally accepted that it takes 10 lunar months/9 calendar months; and if you're counting the 40 weeks you're going by lunar months.
:) I'm ok with the whole thing.
2007-09-19 00:17:59 · answer #2 · answered by WhiteLilac1 6 · 1⤊ 0⤋
40 weeks works out to 9 months and a week. Those extra days in excess of 4 weeks each month add up. Think of it going backwards: There's 52 weeks in a calendar year, right? If you spend 40 of those pg, then 12 are not pg. Lots of people would agree that 12 weeks is more or less 3 month, so that leaves 9 months for the pregnancy.
For that 9 months and 1 week, the first 2 weeks really don't count because you start counting your 40 weeks from the first day of your last period. The actual fertilization doesn't take place until *about* 14 days into a woman's cycle, or 2 weeks. So yeah, as loooooonnnnngggg as it may seem to be when you're hot and tired and cranky and pg, it's still really 9 months.
2007-09-19 00:00:59 · answer #3 · answered by momma bear 4 · 2⤊ 1⤋
Well, I know that pregnancy lasts for 40 weeks, but 40 weeks does NOT in fact equal 10 months like some women like to believe. This is because the only month that has a true 4 weeks is February and that's only when it's not leap year then it's 4 weeks and 1 day. I conceived in February and am due in November that is 9 months.
2007-09-19 00:12:10 · answer #4 · answered by hthrschrdr 3 · 0⤊ 0⤋
A normal pregnancy is 40 weeks (from the first day of the last menstrual cycle). That is 10 lunar months (months with 28 days each). Of course some months have 30 days and some have 31 days and one has 28 days so a pregnancy often is 9 calendar months.).
2007-09-19 00:03:21 · answer #5 · answered by MeikMeik 2 · 0⤊ 1⤋
Pregnancy is dated from your LMP, and lasts approximately 40 weeks (though 38-42 is considered normal).
Some people think that 40 weeks=ten months. Well, it does equal ten LUNAR months but not ten CALENDAR months, as only one month (February) has an even four weeks in it.
Going by the calendar, and dating it from your LMP, pregnancy lasts 9 calendar months + 1 additional week. But, to confuse things further you do not conceive until around two weeks AFTER your LMP-so you are only actually pregnant for about 8 months + 3 weeks.
It is confusing until you understand, and then it is simple. I hope this helps!
2007-09-19 00:02:04 · answer #6 · answered by StayAtHomeMomOnTheGo 7 · 2⤊ 1⤋
If you get pregnant on January 1, you will deliver in September. That's 9 months to me. Do you have some other calendar to refer to?
Keep in mind that your 40 weeks is based on your last menstrual cycle. Those first 2 weeks you are not pregnant!
2007-09-18 23:58:48 · answer #7 · answered by TotalRecipeHound 7 · 1⤊ 2⤋
Because a month is a full month not the beginning
If you go to the very end of the 9th month then you would be at the 40th week or technically the start of the 10th month
2007-09-19 00:01:36 · answer #8 · answered by Anonymous · 0⤊ 1⤋
And sometimes it is only 38 weeks.
(40 * 7)/30.5 is 9.18 months.
Or are you one of those crazy people who think that a month is 4 weeks? There is only one month that is 4 weeks and that is February assuming it isn't a leap year.
If you only count the time you are actually pregnant, not from LMP then "term" is 36 - 40 weeks.
2007-09-18 23:58:28 · answer #9 · answered by Anonymous · 4⤊ 2⤋
40 weeks is 9 months
Every month except February has 4 and a half weeks in it...the half weeks add up to extra days you are counting as a whole extra month...
2007-09-19 00:02:32 · answer #10 · answered by Finchy 4 · 1⤊ 1⤋
Well, when you consider you don't actually conceive until week two, and most months are actually four and a half weeks long, nine months is correct.
2007-09-19 00:00:27 · answer #11 · answered by average_american_superhero 3 · 1⤊ 1⤋