Updated: 7 August, 2019

Being pregnant is an awesome experience as childbirth is regarded as the joy of marriage. In this post, I’ll talk about what happens in the first month of pregnancy. Pregnancy occurs when a fertilized egg gets implanted in the uterus. Fetuses undergo different forms of changes throughout pregnancy. There are peculiar changes that happen in a woman’s body and her fetus at certain stages/months of pregnancy. Women who have given birth once or twice already know and understand the routine and the peculiarities associated with being pregnant.

But for the first-timers, which I presume you are, it is usually a period full of excitement and anxiety. You are happy and at the same time curious about how the whole process will play out. You are eager to find out what will happen to you and your baby during this process. Relax. You are about to uncover all you need to know about your first month of pregnancy.

In this post, I talk about what happens in the first month of pregnancy. 

During 0-3 Weeks of pregnancy (First Month of Pregnancy)

Your pregnancy week starts from the day of your last period. In the first 14 days or so, you are not actually pregnant. Though pregnancies will last for 40 weeks, you only carry the baby for 38 weeks, minus the first 2 weeks. As usual, your body will be prepping for ovulation (to release an egg). During this time, you can have sex few days before your expected ovulation date. Ovulation starts 2 weeks after your first day of your period.

During the third week, the fertilized egg moves just along the fallopian tube towards the womb.

You might be pregnant, but you will not notice it, as there won’t be any signifying symptoms. The egg starts off as a single cell then splits and splits again. Before it reaches the womb, it has split into more than 100 cells also called embryo. When the embryo gets into the womb, it burrows the lining of the womb in what is called implantation. 

During Week 4 of Pregnancy 

In the late third week and early fourth week, the embryo begins to grow and develop around the womb’s linen. The cells outside of the womb reach out to link with your blood supply. Also, during the fourth week, the inner cells (embryo) split into two and three layers. These layers are what later form the different parts of your baby’s body.

The inner layer is what becomes the breathing and digestive systems. This includes the stomach, gut, bladder, and lungs. The second layer (also called mesoderm) forms the heart, muscles, bones and blood vessels. The outer layer (also called the ectoderm) forms the nervous system, brain, eyes, tooth, nails, and skin.

During the early weeks of your pregnancy, the embryo is neatly joined to a yolk like a sac that provides nourishment to the baby.

The embryo is surrounded by the fluid inside the amniotic sac. It’s the outer layer of the sac that develops into the placenta.

Your Body’s Changes

At this point during your pregnancy, you will not notice any major changes in your shape or tummy. Just as I have said earlier, this article will help you track your progress during your first month as well as discuss concerns that might be bothering you. 

  1. At this stage of your pregnancy, you begin to notice slight bloats around your waist – band.
  2. Your breast begins to increase in size. Many women do grow a full cup size during the first few weeks into their pregnancy. This is to prep itself fir milk production
  3. Your breast becomes tender and soft.
  4. Also, your areolas (around your nipples) begin to enlarge and thicken too
  5. At this month, your vaginal secretion becomes frequent. This is quite similar to the secretions you experience premenstrually.
  6. During the first month of your pregnancy, you might start feeling dizzy or tired. You might need to grab some quick nap during the day or whenever you feel dizzy.
  7. You may also feel faint or vomit. When you feel faint or dizzy, try to lie down as soon as possible. Do not lay flat back as this could worsen the dizziness.

What Happens on Your Mind during the First Month of Pregnancy

Pregnancy is a time of expectation. This can also weigh much on your head and make you worry excessively. You might worry about the baby’s health, sex, well-being and your capability to pull through the whole nine months. These fears have been reported to cause miscarriage during early pregnancy, so be careful.

Although it might be a tough journey, letting go of these worries and fear is the best thing for you and your baby.  Here are some ways to help you handle the anxiety and stress during your first month of pregnancy.

  • Create a worry free zone: It could be a little corner of the house, a part of your balcony and you can call it a worry-free zone. Make a vow to always let your worries disappear whenever you are in that corner. Doing this can help you scale through the day, making you enjoy a stress-free
  • Use Aromatherapy: This is the process of using aromatic plants, oils or candle to help you alter your mood.
  •  Play a soft, soothing music during the morning and before you go to bed
  • Include comforting scenery in the form of picture and posters to help you relieve your anxiety. 


You need to understand that in the first month of your pregnancy, the placenta has begun development. The placenta is the round sac-like organ in your womb that stores and transfer nutrients from you to your baby and transfer baby’s waste.

A quick scan will show you a primitive face-like form with a large circle for the eyes. Also, the lower jaw, mouth, and throat begin to develop. In this month too, blood cells begin to circulate

By the end of the first month of your pregnancy, your baby should be around 1/4 inch long.

Table Of Contents

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Chapter 1 – What Happens in the First Month of Pregnancy

Chapter 2 – Conclusion

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