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When does your 3rd tri start?


Forum: January 2013 Playroom

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  #1  
September 23rd, 2012, 09:00 PM
MammaWannaBe's Avatar Mega Super Mommy
Join Date: Dec 2011
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Hey

I know we've tried to decipher the weeks/months of pregnancy--think most of us just confused ourselves more lol, but when does the third trimester actually start?

I ask because according to my Belly Book my third trimester starts next week--in week 25. And I just thought that sounded a bit soon.

Anyone have the golden answer? I don't want to miss this milestone! Lol
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  #2  
September 23rd, 2012, 09:24 PM
Xtapolapocet's Avatar Super Mommy
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Very good question...I don't know either. hahahahahaha
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  #3  
September 23rd, 2012, 09:36 PM
Sawyers_Mommy's Avatar Mega Super Mommy
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Everwhere I've read says that the 2nd trimester goes through week 27 so then the 3rd trimester starts week 28. Thats what I'm going by.
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  #4  
September 23rd, 2012, 10:33 PM
MammaWannaBe's Avatar Mega Super Mommy
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Quote:
Originally Posted by Sawyers_Mommy View Post
Everwhere I've read says that the 2nd trimester goes through week 27 so then the 3rd trimester starts week 28. Thats what I'm going by.
I don't know what to think! That sounds pretty good as well and 25 weeks just sounds really early!
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  #5  
September 23rd, 2012, 10:47 PM
SaraSmiles's Avatar Mega Super Mommy
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Well what makes sense is every 12 weeks you enter a new trimester..but pregnancy never makes sense...so probably 27 lol
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  #6  
September 24th, 2012, 05:05 AM
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My little baby thing under my post says I'll start my third at week 27..two more weeks woohoooo!

I lied..it starts the first day of week 28 for me october 14th..3 more weeks..
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  #7  
September 24th, 2012, 06:31 AM
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If you divide up 40 weeks into thirds...its basically every 13 weeks. So to me 26 weeks would be thee start of a new trimester.

But it never made any sense to me...so I am guessing its the beginning of the 28th week from what others have said.
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  #8  
September 24th, 2012, 06:39 AM
Babyschultz's Avatar Mega Super Mommy
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I've always gone with the start of week 28.
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  #9  
September 24th, 2012, 07:29 AM
MammaWannaBe's Avatar Mega Super Mommy
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Jeez this stuff is confusing! I guess somewhere between 27-28 makes the most sense if you go by every 13 or so weeks is a new trimester.

I never liked math before pregnancy and now I REALLY don't like it! lol
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  #10  
September 24th, 2012, 07:55 AM
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My pregnancy book says the 27th week, but my siggy says the 28th week. I am going with the 28th week. Only 2 more weeks for me! I am still feeling pretty comfy in my 2nd trimester so not sure I am ready to go there yet as that's when the body really feels like it's falling apart...
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  #11  
September 24th, 2012, 08:11 AM
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Since we typically count pregnancy as 40 weeks, I just divide that by three and count the first trimester ends at 13 weeks and 3 days, second trimester ends at 26 weeks and 6 days, and third trimester ends at 39 weeks and 6 days. I guess you could divide that last day up and add 8 hours to each trimester, lol!
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  #12  
September 24th, 2012, 09:20 AM
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Quote:
Originally Posted by marybeth76 View Post
Since we typically count pregnancy as 40 weeks, I just divide that by three and count the first trimester ends at 13 weeks and 3 days, second trimester ends at 26 weeks and 6 days, and third trimester ends at 39 weeks and 6 days. I guess you could divide that last day up and add 8 hours to each trimester, lol!
Is it anal that I did that???

LOL
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  #13  
September 24th, 2012, 10:20 AM
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Quote:
Originally Posted by Briar08 View Post
Is it anal that I did that???

LOL
LOL, I was going to say the same thing. Doing the math, each trimester is 13 weeks, 3 days and 8 hours.

I think different pregnancy sites say different things as far as whether its 27 or 28 weeks. Just to make sure you cover all your basis you can wait to say you are in your third until you are 28 weeks.. then when you think of it you just have 12 weeks to go from that point!!
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  #14  
September 24th, 2012, 11:08 AM
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Quote:
Originally Posted by Briar08 View Post
Is it anal that I did that???

LOL

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  #15  
September 24th, 2012, 01:20 PM
joellejello's Avatar Mega Super Mommy
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I'm gonna have to go by 27 weeks. Though I like the 26 2/3 weeks better...
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  #16  
September 24th, 2012, 04:45 PM
MammaWannaBe's Avatar Mega Super Mommy
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Ok I am creating my own Mere's Math for Dummies. I am due Jan 13th...I am going to make Oct 13th my third tri date which puts me at about 26-27 weeks. haha

I give up. I'm pretty sure the switch from 2nd to 3rd won't be life altering right away but dangit every milestone counts!
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  #17  
September 24th, 2012, 05:00 PM
Lil_Mama2B's Avatar Veteran
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I hate math and I use this for a quick reference. sooo much easier!!

Pregnancy Length Months Weeks Days Trimesters Convertor Calculator convert Weeks into Months - Baby2see
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  #18  
September 24th, 2012, 10:13 PM
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My dentist said 28 weeks.... (no dental work once you hit 3rd trimester according to him... Says baby can feel it) M
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