I'm about 20 weeks so I say about 4 1/2 months. Complicated by the fact that arpegnancy is actually 40 weeks so if you average 4 weeks in a month (which I know you can't as there are 5 week months) a pregnancy is actually 10 months.Or I just say half way
I think that the whole "pregnancy is 40 weeks, which is 10 months," thing is confusing, because of those 2 extra non-pregnant weeks they throw in to make it a round number. Really, it's 38 weeks (on average) counting from conception, which works out to a little less than 9 months. So here I am at almost 20 weeks, and I figure that in another week (at 21 weeks, or 19 real weeks) I'll be at halfway, 4 1/2 months.
Ah but there's more than 4 weeks to a month... 4 weeks is 28 days - months are either 30 or 31, not counting Feb (which just messes things up annoyingly).
If you do 30.5 (to split the difference and take in Feb's nasty 28 days) x 9 you get the number of days (around 274.5) then divide by 7 to get the number of weeks its 39.214... (or 40 for non-aspergers people unlike myself ). Which clears up the whole month/week conundrum tidily.
If you want to know what you are in months do your number of weeks multiplied by 7, add any extra days you're counting, divide by 30.5 and you'll get a rough idea of the number of months.
eg. I'm 21 weeks = 147 days
plus 4 days = 151 days
divided by 30.5 = 4.951 months
Which for the sake of not freaking people out, I'll describe as 5 months....
But this is always counting from the date of your last period. Conception is actually about 2 weeks later, so you do get 2 weeks "free" if you like (as an introductory offer). BUt since this is taken into account in both week and month calculation it doesn't make a difference in this case.
Using this formula I can categorically state, Dawn, that you are 4.721 months pregnant.
Mathematically speaking that should round down to 4 and a half months, but I'm sure you wouldn't get into too much trouble if you were feeling optimistic and said 5 - which you can legitimately (and mathematically) do tomorrow anyway.
There. Bet you wish you hadn't asked... And this makes me officially tragic.
I'm 27 weeks today, there are 52 weeks in a year so I said I was officially 6 months pg last week. However, it was three calendar months yesterday to my due date (19/9), I usually tell everyone in weeks anyway, I don't want people looking at my HEEOOOOGE tummy and say "ooh another three months eh?" the weeks things befuddles them a bit (unless they are recent mums or pg themselves!)
I'm counting in weeks because my brain hurts if I try to work out the weird disparity between the 40 weeks / nine months thing. Although it was explained very nicely by designerbaby. I'm 25 1/2 weeks at the moment.
when anyone asks me, I go with "erm, about 5months" till I decide 6months sounds better. this site has a good thing on the right hand side, if you type in your due date, it works out how many days/weeks/months you are.
I find this fascinating and confusing at the same time too!
asur, that site looks great - I've put in my details and it actually says:
There are 93 days until your due date on September 22, 2007.
You are 187 days pregnant.
You are 6.1 months pregnant.
You are in your 7th month of pregnancy. (huh?)
Your 1st trimester: December 16, 2006 to March 16, 2007. (0 - 12 weeks)
Your 2nd trimester: March 17, 2007 to June 29, 2007. (13 - 27 weeks)
Your 3rd trimester: June 30, 2007 to September 22, 2007. (28 - 40 weeks)