I have two months until my due date.  To people who aren't mothers of children less than 5 years old, would that make me 7 or 8 months?  I always thought 9 months was the "almost there" mark, but that might be because I'm the last in my social circle to have a baby.  DH and my dad say 9 months is the EDD.[Poll]                
                DS born 12/2012
Little Squeaker due 6/2015
              
        
Re: Months for lay-people
This actually makes the most sense to me now that I read it. I've never had someone put it this way before. You are pregnant for 9 months so you are in your 9th month up until your EDD. I have been going by my EDD and counting backwards so since I'm due on 11/28, I've been saying I'm 7 months pregnant but I guess that's only slightly accurate as well.
Do the math:
40 weeks,4 weeks a month, 10 months.
That is from week one of pregnancy though. Most people dont find out till at least 4 weeks which makes one month go away, so it seems like 9 months.
There are more than 4 weeks in a month, except for February........
That would make sense if every month had four weeks.
There are 52 weeks in a year, which is 12 months. Pregnancy due dates are on the 40w mark. That leaves 12 weeks left, which is more than two months, but less than three.
Your due date is 9 months and some change. Way closer to 9 months than ten months, though.
Thank you. I was feeling like a crazy person for a minute there! I count it like this too.
Pregnancy is not 10 months. People who see pregnancy = 40 weeks often assume 1 month = 4 weeks, therefore pregnancy = 10 months (4 x 10).
Not true, not every month is exactly 4 weeks.
ETA: I just think everyone looks at it different, whatever. I look at it though that you aren't actually 9 months until the end, you are "in" your 9th month at 36/37 weeks, but aren't actually 9 months (I know may sound confusing).
Example I'm in my 27th week as of today, today I also entered my 7th month, but I won't actually be 27 weeks until the end and not 7 months until the end of 30 weeks.
Again, that's just how I view it.
But months are more than four weeks.
A week has 7 days.
October has 31 days, for example.
31 divided by 7 equals 4 weeks 4 days.
try either of these sites
https://www.pregnology.com/faralong.php
https://www.baby2see.com/development/index.html
This question is why I always say "I am in my 8th month" instead of saying "I am 8 months pregnant". For some reason it makes more sense to most people.
It finally clicked for me when I saw this handy chart - it's very much common sense, but it's nice for a visual person like me
) 
It is not 10 months. Four weeks =/= one month. Pregnancy lasts 9 months. If we are talking lunar months, then yes, it is 10. But calendar months, it's 9.
Avery - 8.2.07 | Asher - 5.12.10 | Audrey - 11.28.12
I don't get why this is so confusing. I got my last period at the end of July the year my son was conceived. He was born on 5/11 and was close to two weeks late. Count it out:
End of July to end of August=1, Aug-Sep=2, Sep-Oct=3, Oct-Nov-4, Nov-Dec=5, Dec-Jan=6, Jan-Feb-7, Feb-Mar=8, Mar-end of April=9 + he was two weeks over, thus born in May. Yes, from conception to birth my pregnancy occurred in 10 named months but didn't span 10 entire months.
Sigh. No, it does not. 40 weeks is not the same as 10 months. Months are longer than 4 weeks and it doesn't seem like a big deal to have an extra 3 days except when you're multiplying it by 9. Then it matters.
Due dates are at 40 weeks which is not the 9 month mark, it's closer to 9 full months. So when you hit 40 weeks your closer to the 10 month mark.
Started Dating 03/04/2007 ~ Got Engaged 04/23/2010 ~ Said "I Do" 03/19/2011
Started TTC #1 11/2011 ~ BFP #1 03/28/2012-EDD 12/02/2012 ~
Greyson was Born by Unplanned C-Section on 11/20/2012 @ 8lbs 9oz 21 inhces
Started TTC #2 07/2013 ~ BFP #2 10/11/2013-EDD based on growth is June 26th
Liam born by Repeat C-Section on June 20, 2014 @ 8lbs 2oz 20.75 inches
Only every third month has five weeks, two out of those three months has four weeks. Therefore you are closer to 10 months and any doctor would say that a full term pregnancy from day of last period to EDD is 10 months. Not that it lasts 10 months, but you have completed your 9th month.