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The 9 months of a pregnancy: the major milestones during the first trimester

Yumi Yay wants to connect parents and their children by means of Our Little Moments, the small but important moments in life. And those first moments start when they are still in their mommy’s tummy! At times, those nine months of the pregnancy may seem to last forever, but your little one is developing from a cell into fully-grown baby at lightning speed. We created a handy pregnancy calendar to help you track the most important milestones in your baby’s development! It tells you everything you need to know about the first trimester, or the first 13 weeks of your pregnancy.

First month: from last menstruation to first pregnancy signs and symptoms

  • Week 0-1: In the first 2 weeks of your pregnancy, you are actually not really pregnant yet. HUH? Yes, that is because we start counting a pregnancy from the first day of your last period!
  • Week 2: In the second week, the egg is fertilised and starts its journey toward the uterus.
  • Week 3: The zygote (fertilised egg) finds a nesting place in the uterus. This may be accompanied by some spotting, or implantation bleeding. This explains why some women do not immediately realise they are pregnant.
  • Week 4: You are officially late! However, if you take a pregnancy test, it might not show up as positive right away. This is because it depends on the amount of hCG, or pregnancy hormone, in your body. Do you want to know if you are pregnant or not? You can ask your family doctor for a blood test. Around this time, you may start experiencing the first pregnancy signs and symptoms, such as sensitive breasts, a bloated belly and fatigue.
pregnancy calendar Yumi Yay

Second month: You can start to notice it now!

  • Week 5: The embryo is developing at lightning speed into a creature with a head and a tail. As a mom, you also start to experience all these changes subconsciously. You feel less in control of your emotions and you may have a lot of doubts and questions. Try to keep calm and talk with your partner or other (future) moms about your concerns.
  • Week 6: Starting this week, you may be able to hear your baby’s heartbeat! Just a little while longer and you can have your first ultrasound.
  • Week 7: Around this time, you may experience annoying pregnancy ailments such as morning sickness and an enhanced sense of smell. It could also be that you suddenly develop an aversion to your favourite foods or that something you used to hate now seems delicious! Ginger and mint are your best friends if you suffer from nausea.

Tip: Make sure you eat regular (small) portions. An empty stomach often exacerbates the feeling of nausea. Put some crackers or rusks on your night stand. That way you can eat something light as soon as you wake up in the morning.

  • Week 8: Time for the first ultrasound! Prepare yourself for this magical moment, because you will never forget your baby’s first heartbeats. Although you probably won’t be able to see it very well on the first ultrasound images, your baby is starting to look like a proper person: with arms, legs and... webbing between fingers and toes!
  • Week 9: You will have a lot of questions during your pregnancy: “What will having a baby mean financially?”, “Am I going to be a good parent?” This is completely normal and many women have these concerns and questions in the first trimester. Want to clear your head a bit? Going for a walk outside is always a good idea!

Third month: Fatigue and the gender of your baby!

  • Week 10: Your little one is growing and is now officially called a foetus. Are you still able to button up your pants? Make sure you invest in comfortable maternity outfits. If you are thinking about breastfeeding, you can also decide to get maternity clothes which are suitable for nursing, so you can enjoy wearing them for a bit longer!
  • Week 11: *YAWN* Some people might start to think they are boring you, but extreme fatigue is often-heard complaint in the first few months of pregnancy. No wonder, because you are growing a real human being inside your tummy!

Tip: Do you suffer from dizzy spells? As a mom-to-be, your blood vessels dilate and you may notice you don’t have much of an appetite. As a result, you may experience lower blood pressure and dizziness. This is nothing to worry about and it will normalise when you get to the third trimester. Make sure you drink plenty of water and eat small portions regularly.

  • Week 12: Your baby’s DNA can now be detected in your blood, which makes it possible to have the NIPT test done. Would you like to know your baby’s gender? If so, this will be another special moment in the pregnancy! The NIPT test can also detect genetic defects such as Down syndrome. This is a voluntary blood test, and it is completely safe. It is up to you to decide whether or not to have it done.
  • Week 13: Most parents start planning their pregnancy announcement around the 12-week mark. How are you going to share the happy news with the (future) grandparents, other family members and friends? You can find plenty of original ideas online!

Have you ever heard about 'nesting'? Or are you already curious about what to expect in the 2nd trimester? Read all about it here!

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