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12 Weeks pregnant

Week 12 starts on day 84 and goes up to day 91. It is your thirteenth pregnancy week.

Length of your baby: 6.5 centimeter / 2.6 inches
Weight of your baby: 20 grams / 0.7 ozs

Your pregnancy at 12 weeks 


What's happening with mum

This is a special week for mum and baby. This is the last week of your first trimester and it is usually around this time you can expect to have your first ultrasound scan, sometimes called a "dating scan" as it not only provides you with images of your little one but can more accuratly estimate when your baby will be born.

If you already have a date for your scan make sure you are prepared and drink plenty of water as this fills the bladder, lifting the uterus and maing it easier for the technician to get a clearer image of your baby.

As well as making sure your baby is developing and growing the scan will also check whether you are carrying twins or multiple babies, check the regularity and strength of baby's heartbeat and can also see your pelvic area and assess the condition of your fallopian tubes and uterus.

What's happening with baby

[[week 12 video]]

Although all the pieces of your baby jigsaw are now in place including organs, now is the time they have to get busy and get working. Baby practices breathing in the womb by inhaling and exhaling amniotic fluid and sweat glands and saliva glands will now start to function.

It was previously believed that this was too early to tell the sex of your child but new research has developed the nub theory. All babies in early pregnancy develop a genital tubercle which later forms either a penis in boys or a clitoris in girls. This tubercle is known as the nub. Because this resembles a penis and is present in all babies at this stage,  it has always been difficult to know whether or not the baby as in fact male. It has now been shown that  angle of this nub can determine whether the fetus is male or female. There are three positions which can help determine the sex of your fetus. An upward pointing nub is a strong indication that the child is male, a nub pointing down suggests the baby is female and the central position which points neither up nor down is indeterminable and means you have to wait until later in the pregnancy to see whether you are having a boy or a girl.


The Practicalities

As this is a milestone in your pregnancy and while not impossible, the likelihood of miscarriage is far less than previously, now is a good time to tell family and friends your good news. 

Even at this stage it is still advisable that you eat a healthy diet and refrain from eating unpasteurised or undercooked products, especially cheeses and meats. Providing you eat a balanced diet with all the protein and vitamins you need for both you and baby there is no ned to "eat for 2". 




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  • carljames29

  • Sienne-Smith

    Finally moving to the second trimester! I feel so relieved to an extent, after trying to conceive for the longest time! Can't wait for my first scan and my SO and I are also contemplating if we want to know the sex of the baby yet. I am tracking my week by week pregnancy on whattoexpect that is a pregnancy and parenting website. I have read some good articles here. It sure can be a helpful resource for anyone looking for alternatives.

  • aztlandreams

    I am 12 weeks today with my Rainbow 🌈 baby 👶🏻 ❤️. 7 more days to be in the safe zone.

  • China-baby-34

    Wow 2nd trimester on the way

  • aztlandreams


  • Trininicki

    My little cashew is 12 weeks today....2nd trimester here we come!!!

  • Lyndsy-Lou

    @Amanda Smith - “@Lyndsy lou - “@Am...„
    I`m due December 15th! I know what you mean about the heat it was 103 here today and tomorrow it will be 105! So glad you`re doing good, what`s your due date? My next scan (gender scan) will be the week of July 10.

  • Amanda Smith

    @Lyndsy lou - “@Amanda Smith - “@...„
    Doing ok thankyou. Had an early scan at 8 weeks so that was nice and reassuring then had one at 12 weeks but I was actually 13 it was moving and stretching just boiling in this heat xx next scan is august 2nd xx when are you due xx

  • Lyndsy-Lou

    @Amanda Smith - “@Lyndsy lou - “I a...„
    I had my last ultrasound on May 25 and everything looks great I have another appointment June 22 this Thursday. How have you been how`s your baby.

  • Amanda Smith

    @Lyndsy lou - “I announced today to...„
    Have you been for any scans yet xx are you feeling ok xx

  • Amanda Smith

    12 weeks today also with my Rainbow baby. Had a scan at 8+3 all was good.. anxious for my scan Friday

  • Lyndsy-Lou

    I announced today to the rest of my family and friends that my husband and I are expecting! 12 weeks with my Rainbow baby!!!

  • beckjennifer745

    im 178 pounds and im 13 weeks pregnant when will I start to show and feel the baby?

  • Hadeacha19

    It says i should be 12 weeks starting 13 but when i take a test its a negative! My last period was July 20th. Has anyone had that problem if so can you message me and tell me what you did to find out if you were preggers or not?

  • Junerose

    Wooow I`m 12 weeks pregnant for my third child.i have 2 boys now hope it`s a girl

  • Lilparty

    This says I`m due either February 28th or March 1st. Does anyone else have the problem of 2017 not being able to be selected?

  • ndeshi

    Hi I`m 12 weeks now and a few days. Any mom`s dew Feb 27 2017

  • Pooja21

    I am 12 week and 3 days. :)

  • queen_keylolo

    I`m 12 weeks and 1 day!!! I`m so blessed I`ve been ttcing for over 6 years and had many losses and disappointments but look at God!!


  • Abargas

    I made the 12 week mark!!! YAY!!!

  • Neil29

    I made 12weeks today woot woot

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Members in week 12

If you are 12 pregnant your due date is from Thursday, 24 November 2022 through Wednesday, 30 November 2022.

  • 11/24 Christinaclaydon

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