Trimester Question

[baby796607]

When does the 3rd trimester start?? I am currently around 25 weeks pregnant and am curious to when the next trimester is..

I have been soo tired lately, along with having headaches and dizzy spells and what not.. .. I just feel exhausted... I thought the second trimester was supposed to be the most energetic or enjoyable one.. is this normal at this point or should I bring it up to my dr next week on how exhausted I've been.. thanks for your replies!

[sameerab]

3rd trimester starts 28- 40 weeks or (delivery)

[Brown Eyed Gurl]

here's some info I found they go according to Development Gestation and conceptions

Development

This method uses actual developmental stages to divide up a pregnancy. From LMP to 12 weeks the embryo develops all the major organs, becomes a fetus, and the placenta takes over control. From 12 weeks to 27 weeks the fetus continues developing and reaches viability. From 27 weeks on the fetus finishes development and prepares for delivery. Here the second trimester begins at 12w0d and the third at 27w0d.

Gestation

This is a mathematical method where you take the 40 week gestation and divide by three. Here the second trimester begins at 13w3d and the third at 26w6d.

Conception

Another mathematical method where you take the 38 weeks of post-conception development, divide by three, and add two weeks. Here the second trimester begins at 14w5d and the third at 27w3d.



Hope this helps
Brandi 22.5 weeks (twins)

[pinkbelle]

hey i think its either 27 or 28 weeks... my what to expect when expecting book says 27 but I have read otehr places 28 but you are really close so congrats!

[Brown Eyed Gurl]

My Doc says it starts at 24 weeks....I think it just depends on who says it.....

[chantal21]

Yea it starts at 28 weeks. almost there now!! =)

[mamaofonetrying42]

3rd trim starts at 28 or 29weeks......