Stages of Pregnancy – 3rd & final Trimester

Posted by on Sep 6, 2007 in Pregnancy, Pregnancy Trimesters | 22 comments

This is the start of the third and final trimester, so you are on the home stretch now! Revel in your pregnancy as much as you can, because when you look back you’ll find it amazing how quickly it all slipped by. In about three months time you will meet your new baby. OK enough talking lets get on with your baby’s development for the remaining months to come.

3rd Trimester

7th Month

7th Month

Your Baby’s development

  • If your baby had to be born at this stage there would be an excellent chance of survival.
  • The length should be around 25cm and weighs about 1,1kg.
  • Your baby’s head is much more in proportion to their body by now.
  • They are getting plumper and greasy vernix (this is protecting the skin, which is immersed the whole time in amniotic fluid) is now covering their body.
  • Their eyes can open and close and the colour of the iris is now visible – colour changes after birth though.
  • Your baby gets hiccups from time to time and you may be aware of this too, the hiccups could be happen because of the “practicing” breathing movements.
  • They may suck on their thumbs or fingers from time to time.
  • The placenta receives about 400ml blood from the mother’s circulation every minute.
  • Her muscles are now well toned and in proportion to their body size.
  • Their limbs are sometimes visible moving about underneath the skin of your bump.
  • Although the skin is still wrinkled, fat is continuing to develop giving your baby a less lean appearance.
  • They have an acute sense of taste, but will be much greater when they are born.
  • Te brain is also growing at a rapid pace and the nervous system is developing so that the messages could be passed from the brain to different parts of the body.
  • By now your baby should have a well developed sense of touch.
  • Your baby will be able to respond to stimuli, including pain, sound and light.
  • Your baby is developing the ability to orientate themselves in their space.

Facts about you

  • Many women spend some time in front of a mirror admiring their bump, your breasts are so much bigger than usual and you might even have a cleavage to be proud of.
  • From now on you will see your caregiver (midwife, GP or obstetrician) every two weeks and weekly from 36 weeks.
  • Your breast may leak colostrum, although some don’t produce this until the baby is born.
  • You may develop vericose veins due to the pressure on your legs. Try to lie down feet up.
  • You may be short of breath due to the fact of the upward pressure of the uterus on your lungs and diaphragm.
  • Baby may cause some rib pain because of the pressure.
  • You are gaining more weight.
  • You may get a stitch like pain down the side of your abdomen as you walk.
  • Puffy hands and feet. So wear some comfortable shoes and remove your ring and jewelry, if it is summer try to cool down in a swimming pool or take a cool bath.
  • Leg cramps, speak to your doctor you might have to take more calcium and get your partner to massage your legs and calves.
  • Piles (haemorrhoids) DRINK LOTS OF WATER and eat fresh fruit!!!!

8th Month

8th Month

Your Baby’s development

  • Length of your baby should be 30cm crown to rump and weighs about 1,8kg.
  • Finger nails has reached the ends of the finger tips.
  • Their eyes can react to light.
  • His/her brain is growing a lot at this stage.
  • Their bones are hardening, but in the skull the bones will still remain unjoined so that they can fit over one another during the journey of the narrow birth canal.
  • Their fine body hair disappears.
  • Their irises in their eyes can now dilate and contract in response to light.
  • Your baby is possibly head down in your uterus and will probably stay this way until birth.
  • Wrinkles on the face will start to smooth out.
  • Your baby is aware of the Braxton Hicks contractions that occurs in your uterus, even if you don’t notice them.
  • Your baby might double in size in the next month or six weeks to come.
  • Your baby’s movement around 32 weeks, so expect to have a lot of disturbed nights! From now on your baby may seem to move less, because they are growing quickly and space is premium.
  • His/her arms and legs are now in proportion and spend the most of the time with their legs pulled up to their chest.

Facts about you

  • You might not be sleeping well at night, which may cause you to feel more tired during the days.
  • You may have the need to urinate more often.
  • You might also be aware of your baby’s hiccups.
  • Backache is often a problem in the later weeks.
  • Your pelvis may ache, especially when you have to stand or if you have been sitting with your legs crossed, this is due to the baby’s weight.
  • Stretch marks, this will fade after birth, but until then get an un-perfumed body lotion to ease itching.
  • Heartburn and indigestion will still occur, try and have your biggest meal earlier in the day rather than at night.
  • Your pelvic joints are expanding now in preparation for birth.
  • Avoid sudden movements.
  • Rest when you can, and put your feet up for an hour or so each day.
  • Your advance state of pregnancy effects everything you do, from getting up and going to bed, so take things slowly and listen to your body! 😉

9th and Final Month

9th Month

Your Baby’s development

  • At 36 weeks your baby’s length is about 32cm and weighs about 2,5kg
  • There is less amniotic fluid in the womb now your baby is so much bigger.
  • The placenta is producing a hormone to stimulate your breasts to make milk for when your baby is born.
  • The central nervous system is still maturing and the baby’s reflexes is improving day by day.
  • Your baby is developing their fat supply and putting on weight almost 140g per week.
  • At this stage when your baby is awake their eyes will be open.
  • If you move around a lot or gently press on your abdomen your baby may wake or when eating a meal rich in carbohydrates may have the same effect.
  • 99% of babies born at this stage of pregnancy survive without any effects.
  • The uterus has grown to 1000 times its normal size to accommodate the pregnancy by this point.
  • Your baby can sense light changes through your abdomen.
  • The lanugo and their top skin layer are shed into the amniotic fluid and then ingested by the baby and form the solid mass of their first bowel movement, this is known as meconium.
  • Their skin is beginning to smooth and their face is loosing their wrinkled appearance.
  • Your baby should also have hair on their head – interestingly it won’t be the same as the parents, although it will still change after birth. Hair color is notoriously difficult to predict.
  • Their lungs are almost fully developed and in preparation for a lifetime of breathing she/he is practicing breathing by inhaling small amount of amniotic fluids.
  • Their kidneys are fully developed and their liver is able to process some waste products.
  • Your baby has developed a cycle of activity and sleep that you probably are aware of.
  • Unborn babies normally sleeps during the day and when you get in bed at night they wake up, this predicts sleeping patterns when your baby is first brought home.
  • Because of the limitation of space movement s of your baby may feel different.

Facts about you

  • The “Nesting instinct” if often strong and you may feel the urge to spring clean – don’t over do this!!!
  • Heartburn, indigestion and breathlessness should lessen once your baby’s head drops in the pelvis.
  • You may want to urinate more due to the fact that your bladder is under pressure.
  • Braxton Hicks contractions may become more frequent and more intense.
  • You may tire easily because of the extra weight of your baby and poor sleep.
  • Hands and feet may be puffy.
  • Carpal tunnel syndrome – tingling numb fingers caused by swollen tissues in your wrist as a result of pregnancy, this creating pressure on a nerve. This usually goes away after delivery. – taking vitamin B6 daily or wearing a wrist splint may help.

Congratulations you got this far!!! 😉 Now, are you ready for your final week?

Week 40

Your Baby’s development

  • By this week your baby should be about 50cm and weighs about 3,4kg
  • 97% of babies are head down in the uterus and will be born this way.
  • At birth the placenta is roughly one-sixth of the size of the baby
  • The umbilical cord is about the same length of the baby.
  • The amniotic fluid which surrounds the baby has now changed from a colorless liquid into a pale milky consistence because of the lanugo that has been shed into it.
  • There is about 1 litre amniotic fluid around your baby.
  • Your baby is now ready to be born and is much chubbier than before, for the last 40 weeks they have grown from a tiny bunch of cells into a fully formed human inside of you.

Facts about you

  • You weight gain has slowed or stopped since week 37, in fact you might loose about 900g – 1,4kg for the last weeks to come.
  • The weight of the baby may cause you to leak urine.
  • You may have signs of onset labour, such as a show – the loss of a mucous plug and blood which has blocked the cervix through your pregnancy is expelled now the cervix is opening to let the baby through, slight diarrhoea and contractions – report this to your doctor.
  • Your bump is impressively large and you are probably tired.
  • Your main concern at this point is probably impatience that it’s all taking this long, try to enjoy your final days of your pregnancy without getting to uptight about being “late”. In fact don’t try to think of yourself being late at all, most babies arrive after their due date, and this is most common for first born babies.

Well that is it, you should be ready now and good luck! From Baby R Us because we are for babies.

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  1. Thank you so much for sharing all of this information. My husband and I are preparing for our first baby and I’ve been quite nervous, it’s lovely the way you’ve broken it down for us.
    Thanx again.
    xx Michelle

  2. I am sooo happy that I now have full knowledge of whats going on inside me. I am in the second trimester and I hope to finish the final one without any complications.


  3. This is so helpful, and broken down nicely.

  4. this is really helpful for all of us in the process. I have gained a lot and have printed this so i can have it at home bcoz I dont have internet at home. It really gives clarity bcoz we sometimes dont even know what is happening inside us. Just finishing my first trimester this week.

    Again thanks a lot for your help OK!!!

  5. The information is fantastic thank you. I’m in my sixth week; i was lucky I did not suffer from morning sickness, but I’m paying for it with a constant terrible bloated tummy. I celebrate after every small burp and f@rt..oops!! It’s usually better after a fruit salad though, so that’s fast becoming a staple diet. But the other night, it got really bad, and I drank ENO. I did get the required release, but now I’m worried about its safety. Can i use it again under desperate situations or is it not safe?

  6. Hi Jacqueline

    ENO is only active salts and therefore should be fine to use. Only use medicines when it is really necessary, our doctor told my wife to use “Gaviscon” instead, but then it is always better to consult your own doctor.

  7. Hi

    Thanks for the information. It really feels good to know what is happening inside your body and what to expect on the following trimester. I am towards the end of my second trimester,

  8. ohh thanx guys this is really helpfull, it help u understand and expect wats next,
    all the best guys, make sure u enjoy every moment of it
    this is my last week next week i will see my baby boy.

  9. Thanx4the info! I am now 32 weeks with my 1st baby&this site has been such a help!
    The pictures are also great to show daddy how his boy is developing.

  10. Thank u very much for all this interesting info it really put things into perspective for my fiance and i! I am now half way through my third trimester and will be meeting our new baby girl very soon but cant wait to hold our precious girl! Thanks again

  11. Thank you for this information, it is really helpful.

  12. Hi there Everyone

    I’m also an expectant mom at 24months , this information is really helpful its a full guide for us pregnant women. This is my second baby and its a girl am really excited feels like my first.Thanks to this info i will be able to go through these changes knowing whats going on thanks guys.

  13. Hi there Everyone

    Im also an expectant mom at 24 weeks , this information is really helpful its a full guide for us pregnant women. This is my second baby and its a girl am really excited feels like my first.Thanks to this info i will be able to go through these changinges knowing whats going on thanks guys.

  14. Thank-you so much, really helpful info on your website.
    I am in my 26th week, well informed now and ready for my baby boy

  15. I’m 2 weeks pregnant. So excited, this is our first baby. I cannot wait for this journey. It feels so surreal!

  16. I am 32 weeks and I feel like its my first trimester, I am tired all the time and very sleepy. I’m thinking of taking an early maternity leave. is there any of the ladies experiencing the same feeling??


  18. @ no.15 yes I feel the same.whats worse,is the sleepin positions,I feel uncomfortable,I urine frequently,and sometimes my baby does not want to sleep at night,so I have to stay up,and go to work very early in the morning.

  19. Thank you, i was worried sick thinking by baby could be under-weight as I’m 35 weeks and she is 2.323kg’s at the moment. But will she be gaining more weight at these weeks??? or is it slow for them to pick up weight at this stage???

  20. hey mommas i visited this website and found great information of each trimester,i am 27 weeks pregnant and it was an unplanned one,i was miserable through out the time until i saw my baby move one day after lunch i realised that what i was going through is bigger than me it couldnt have been my plan greater power is in charge and i am very excited about this journey its truly magical…my worst nightmare thou is having a big old belly but at six months it is not all that bad im crossing fingers it remains rather manageable wish me luck.

  21. im 7 months now and i feel the pain and it is sore but i love it when the babby moves, its so adorable and the clothes that i was looking at the other day where so cute, i wanted to buy them there and then, but i didn’t because i find to early to do so maybe i will start buying clothes next month, im due in january, i just can’t wait and this website is really great for especially now that im in my third and final trimester, the website helps me understand everything

  22. Hey…this is so helpfull nd gets me vdry excited throughout my pregnancy…this is the laat week of my first trimester and now i have a clue on wats going said that at tyms u may not feel pregnant aspecially on da lSt week of da 1st trimezter nd its true,,it gets me worried a lot but now that iv read this it has helped a lot…but am worried about my eating pattern..i cnt eat well nd i feel a lot bloated…wat cn i du so i cn start eating well…because i jst wnt to eat most of junk food but cannt eat home cooked meal..

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