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How Does Everyone Count Their Weeks of Pregnancy?

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wannababy25

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Joined: 29 Jan 2006
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Location: Near Ottawa, ON
How Does Everyone Count Their Weeks of Pregnancy?
Posted: 02-14-06 10:12am

From most of the reading i've done...Most start from the 1st day of your last period...But some actually know when they ovulated and count from when they know the conceived.

How do you count your weeks?
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alanna

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Joined: 13 Feb 2006
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Location: Norfolk, VA USA

Posted: 02-14-06 12:41pm

I count by the weeks since my last period. Thats what the doctors count as well.

So by the time you actually conceive, you are considered 2 weeks pregnant. So actually, you are pregnant for only 38 weeks.
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Eyes Wide Shut

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Joined: 04 Jan 2006
Posts: 7892
Location: *UPTOWN*NEW ORLEANS*, La

Posted: 02-14-06 12:43pm

Your Dr. Will count 40 weeks from your last period as your projected due date....

Month 1: 1-4 weeks
month 2: 5-8 weeks
month 3: 9-12 weeks
month 4: 13-16 weeks
month 5: 17-20 weeks
month 6: 21-24 weeks
month 7: 25-28 weeks
month 8: 29-32 weeks
month 9: 33-36 weeks
month 10: 37-40 weeks

it's very confusing because all your life you hear that a pregnancy is 9 months...But in actuallity it's 40 weeks which is 10 months...
You Dr. Can help you out a lot with this..

I find it helps other people if you tell them the week you are instead of the month because everyone counts 9 months and it wont add up right....

It's frustrating at first..But you'll get the hang of it...I wasn't totally sure until 20 weeks and I knew that that was the last week of my 5th month!!

Good luck..I hope this helps!!!

Sarah
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fatfamily02

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Joined: 20 Jul 2005
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Location: Georgia, USA

Posted: 02-14-06 12:52pm

Yes this is calander months not lunar months--that we live in. Lunar months is 10. But calander months every 3rd month has an extra week. And by calander months we are pregnant exactly"" 9 months minus 8 days.""" from 1st day of ovulation to edd.

You get the same exact day on the .Dr wheel as this.

Take 1st day of last period---
add 14 days---1st day of ovulation---
add exactly 9 months---
take off 8 days---edd---same as .Dr wheel.
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tigresacanela24

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Joined: 11 Nov 2005
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Location: Treat your children well, eventually they'll choose your nursing home.

Posted: 02-14-06 14:43pm

It's still too complicated for me. I hate even thinking about it because it's like pregnancy lasts forever and a day. I'm into week 25 but it feels like i've still got forever to go. I was ticked off at my doc bcos I know when my conception date was because it was definitely one of my more memorable experiences. And that would put me about a week ahead of my initial due date. But the doc doesn't really care. I also asked her about whether or not my menstrual cycle being 21 days would have any effect on the edd. She brushed me off.
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fatfamily02

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Joined: 20 Jul 2005
Posts: 3050
Location: Georgia, USA

Posted: 02-14-06 14:55pm

The edd, even from u/s or the wheel is + or - 5 days. The baby can be born anywhere from 37-42 weeks and still be considered full term. They always come exactly when they are suppose to---all will be fine---.God bless
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mia7

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Joined: 09 Sep 2005
Posts: 378

Posted: 02-14-06 16:33pm

When they tell you for example: you are 20 weeks pregnant, this means that the baby is actually 18weeks. That is just based on how the docs count it, but some people conceive before or after this time, but they go by what's average.

Your mestrual cycle does play a part.

A baby is concidered full term at 38 weeks but the longest the baby is concidered safe to be in your belly (for the most part) is 42 weeks. So they count to 40 weeks which is right in the middle. This would mean that the average pregnancy is 280days (lmp) and 280 days actually is closer to 9 months.

(if you count 4 weeks per month you leave out 2-3 days per month, by the end you will have counted 10 months but this is not so)

280days divided by 7 days of the weeks = 40 weeks
280 days divided by 9 months = 31.1 (in days)

i am 30 weeks
if I count by 4 weeks I would be 7 and a half months (some people do this and end up being 10 months by the end)

but if I count by actual calendar months I won't be 7 months until feb.23rd

what I did to help me was just write on my calendar to count by weeks. Find the first day of your last menstrual cycle and mark 1week and go down each week as 2, 3,4, ... That way you can keep track.
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Eyes Wide Shut

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Joined: 04 Jan 2006
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Posted: 02-14-06 17:17pm

That's odd because I am 29 weeks and in the 1st week of my 8th month...I go my my method only because it's my Dr.S suggestion that I do to stay unconfused....

I am 29 weeks preggy but my baby is only 27 weeks old...That's an understood being that they count the 2 weeks before the embryo implants as you being preggy.

The way I count that I am in my 1st week of my 8th month makes total logical sense...If my pregnancy is 40 weeks than I only have 10.3 weeks to go which adds up to 2 1/2 months left. Which would put me at 10 months...Granted it's 2 or 3 days off being that feb. Is only a 28 day month, I am very specific when it comes to days...Today I am 29.4 days preggy...


Sarah
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mia7

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Joined: 09 Sep 2005
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Posted: 02-14-06 17:29pm

If you are in your 8th month and you are counting 4 weeks as a month

8 multiplied by 4 =32 (weeks??) I am confused??
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Eyes Wide Shut

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Joined: 04 Jan 2006
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Posted: 02-14-06 18:05pm

Exactly....32 weeks would be the last week of your 8th month....
36 weeks would be the last week of your 9th month.....
So on and so on....


The way my Dr. Explained it was with the weeks of the 5th month..I though you made 5 months when you were 20 weeks and he told me that 20 weeks is the last week of your 5th month...And then it clicked for me...

Sarah
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wannababy25

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Joined: 29 Jan 2006
Posts: 262
Location: Near Ottawa, ON

Posted: 02-14-06 18:09pm

Wow! Thanks for all the responses. It almost ticks me off that you have to count the two weeks before conception. So when someone says they're 6 weeks preggo...They've actually only been preggo for 4. Urgh! What a pain! Maybe i'm just grumpy! :( lol!


Anyway...Thanks again!!


Last edited by wannababy25 on 02-14-06 18:52pm; edited 1 time in total
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Eyes Wide Shut

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Joined: 04 Jan 2006
Posts: 7892
Location: *UPTOWN*NEW ORLEANS*, La

Posted: 02-14-06 18:50pm

Lol...You are actually preggy...The embryo just hasn't implanted....You are 6 weeks preggy...Your baby is just 4 weeks old!

Good luck!!
Sarah
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mia7

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Joined: 09 Sep 2005
Posts: 378

Posted: 02-14-06 19:13pm

Lol, ok I see what you mean now. It's like me saying that I am 23 years old because I am in my 23rd year of life even though my birthday hasn't come yet. So I am 22 years old (completed year) but have entered my 23rd year.

Although... If you say you have 2 and half months left until you are 10 months, doesn't that mean that you are 7.5 months??

I am confused again?
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Eyes Wide Shut

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Joined: 04 Jan 2006
Posts: 7892
Location: *UPTOWN*NEW ORLEANS*, La

Posted: 02-14-06 21:44pm

Lol...Just ask your Dr. How they would explain the length of time and how to translate it into months for you...

Girl..It took me a long time to finally figure it out and I couldn't have done it with out lil_blaze and my ob/gyn....

Ok...40 weeks = approx. 10 months.....
Month 1: 1-4 weeks
month 2: 5-8 weeks
month 3: 9-12 weeks
month 4: 13-16 weeks
month 5: 17-20 weeks
month 6: 21-24 weeks
month 7: 25-28 weeks
month 8: 29-32 weeks
month 9: 33-36 weeks
month 10: 37-40 weeks

this is how my Dr. Broke it down for me....It's pretty self explanitory but it'll take a while!! Lol...

Ohhhh...I hear what ya saying about the 7.5 months!!! Lol...Hello!!! I'm 8 months preggy...But my baby is only 7.5 months old!!! Lol...That one took me a while....You are considered preggy but your embryo (forms when the sperm fertilizes the egg) doesn't implan into your uterus until approx. 2 weeks later..Which is when some women experience implantation bleeding...It's not exactly 2 weeks it's just the ecd (estimated conception date)...Your baby can be born at 38 weeks..Which would make me 40 weeks preggy!

I really hope this helps!!!
Sarah
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wannababy25

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Joined: 29 Jan 2006
Posts: 262
Location: Near Ottawa, ON

Posted: 02-15-06 00:23am

Lol! I think my brain has just been operating a little slower these days. Hehehe! I do get it though. I just wish they'd count from probable implantation date. Just seems to make more sense. So if i'm preggo i'd be 7 weeks and 2 days. Last normal af started dec 25th. Wow!


mia7 wrote:
lol, ok I see what you mean now. It's like me saying that I am 23 years old because I am in my 23rd year of life even though my birthday hasn't come yet. So I am 22 years old (completed year) but have entered my 23rd year.


lol! Yeah i've thought of that before. As I get older...I think I may just try to forget that little fact. I prefer to think that i'm 25 for 7 more months rather than i'll be done my 26th year in 7 months. Lol!

Thanks for all the responses. :)
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