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When does the first trimester end?

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Old 03-21-2006, 01:11 PM   #1
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shamrockcb HB User
Question When does the first trimester end?

Sorry if its a silly question but I've read conflicting information and it probably relates to when you start counting.

Does the second trimester start 14 weeks after your LMP?

Thank you

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Old 03-21-2006, 01:25 PM   #2
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baby#2 HB User
Re: When does the first trimester end?

The first trimester is the first 13 weeks based on your LMP. At that point your baby is 11 weeks old! This is when the risk of miscarriage goes down like 80% or more!
This is what I have been reading anyway!

Last edited by baby#2; 03-21-2006 at 01:26 PM.

Old 03-21-2006, 01:25 PM   #3
Join Date: Oct 2005
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Sara20 HB User
Re: When does the first trimester end?

i believe the second trimester starts when you are 13 weeks..i go to and type in pregnancy week by week and the first one that comes up, i think it says pregnancy week by week sponsored by storknet, or something close to that..and it tells u how the baby grows each week and your body changes..and by that website, it says 2nd trimester is at 13 weeks!

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