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trimester question

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Old 02-21-2003, 11:22 AM   #1
Join Date: Jan 2003
Location: Virginia, USA
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dingo_102 HB User
trimester question

When are you in the second trimester? Is it at 12 weeks after conception or 12 weeks after beginning of last period?

I have read two different things and gotten myself really confused thanks.


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Old 02-21-2003, 11:27 AM   #2
Join Date: Jan 2003
Location: AL
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siren24 HB User
Re: trimester question

I had the same question. My doc said 12 weeks after conception.

Old 02-21-2003, 11:56 AM   #3
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Join Date: Nov 2002
Location: Abbotsford, BC, Canada
Posts: 42
FrostyKitten HB User
Re: trimester question


I found this through the Canadian Medical Association:

The first trimester covers weeks 1 through 12; the second trimester runs from the 13th to 28th week; and the third, the most variable, is measured from the 29th week to the end of pregnancy.

Hope that helps a bit!

EDD- March 13, 2003 (Hubby'sBirthday!)

Old 02-21-2003, 12:50 PM   #4
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Location: Calgary, Canada
Posts: 49
BonBon24 HB User
Re: trimester question

From what I have been told or read - If you are on a 40-week calander then the 1st trimester will end at 14 weeks because they counted the 2 weeks before you concieved. If you count using the 38 week calender(what most Dr's do)then you will stat at conception and your 2nd trimester will start after week 12. Each pregnancy month is made up of 4 weeks (it is called a lunar month) you have 9 and a half of these so 4X9=36 + 2 extra weeks = your 38 weeks 1st trimester (1-12weeks) 2nd (13-24weeks) 3rd (25 -38 weeks) I hope this helps and I hope I am correct, Good Luck!<p>[This message has been edited by BonBon24 (edited 02-21-2003).]

Old 02-22-2003, 10:14 AM   #5
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kristen_channel HB User
Re: trimester question

I, too, was told the first trimester ended 12 weeks after conception... so, after pregnancy week 14.

I was confused about the whole week/trimester thing at first, too!

Old 02-22-2003, 07:53 PM   #6
Join Date: Jan 2003
Location: Virginia, USA
Posts: 1,027
dingo_102 HB User
Re: trimester question

Thanks guys. I think I have figured it out now. I kept thinking WOW only 2 weeks until the second trimester. Now it's like 3 1/2 weeks really.
that was rather confusing.

April <IMG SRC="">

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