How Big Is Your Baby in First Trimester?

Wonder how big your baby is now? Here's an approximate look at size, weight and height in the first trimester.
  • Share
  • Print Print
  • Comment Comments (55)

Poppy seed
Joseph Calev - Fotolia.com
1 of 12
Next
Week 4

Baby's Length: <.25 in.

Baby's Weight: <.25 oz.

Baby's Size: Poppy seed



All length measurements in the first trimester are considered crown-to-rump (head-to-butt) because your baby's still too small to get an accurate head-to-toe assessment.

Pregnancy Tracker: Week 4

My Growing Belly: Month 1

Fetal Development: Month 1

Free Weekly Ages & Stages Newsletter!

Free Daily Kick Pregnancy Newsletter!

What do you think of this story?  Tell Us.

1 of 12
Next
Related Links
Wonder how big your baby is now? Here's an approxi...

We've partnered with the American Institute of Ult...

We've partnered with the American Institute of Ult...

Related Videos
Why and when do miscarriages typically happen? Wha...

The miracle of a baby's development is brought to ...

Parents.tv shows you what to expect from your firs...

Parents Are Talking
Comments (55)
4204726675
lmsr79 wrote:

Im 6w5d pregnant. This is my fourth pregnancy but have miscarried the previous three. I read the above comments from others with such circumstances and just want to say that "Hugs, Prayers and Positive Thoughts" are coming your way and hoping that we all get the happy outcome we want so badly :-)

1/20/2012 04:27:25 PM Report Abuse
vickygroups wrote:

there's a huge problem. i clicked how big is your baby from week 13, and it brought me to week 4

4/17/2011 10:14:36 AM Report Abuse
livy_coulthard wrote:

I am 8 weeks pregnant with my first child at 35. My step-children are ages 9, 11, and 13 and took the news very well. The girls are already planning outfits, even though their new sibling is not due to arrive until Oct. 25. The only issue I have been having so far is the nausea. Just wish I could find something i can eat and not regret later! Hopefully it doesn't last all nine months!

3/21/2011 02:25:38 PM Report Abuse
mrschurchill355 wrote:

its been 15 yrs for me. 3 loses in 6 yrs and now we are 6wks, everyone we know is sending positve thoughts and crossing everythng they possible can

3/20/2011 10:19:33 AM Report Abuse
vanyc25 wrote:

I'm 6wks pregnant.This is my third pregnancy.We've have had 2 miscarriages in the past.We're hoping for the best this time around...So far so good!!!

3/14/2011 12:36:15 AM Report Abuse
Add your comment

You must be logged in to leave a comment. Register | Log In

Please confirm your comment by answering the question below and clicking "Submit Comment."

  • Mom Finds
  • Mom Tools
  • Win
Parents Magazine on Facebook

Latest updates from Parents Network

Follow American Baby on Twitter Follow Parents on Twitter