Your pregnancy at 4 weeks

Here we go, Mum-to-be, let the journey commence! At 4 weeks, you may not even know you are pregnant yet, although some early pregnancy tests may detect an increase in hCG (the pregnancy hormone) in your body.

The Wait for a Positive Test

You might be holding out for your period before trying a test. This can seem like forever, but while you are busy waiting, your baby is on its own important journey down the fallopian tube. Let's take a closer look at what's happening inside your body right now.

Baby's Journey

After conception, your fertilised egg starts its journey down the fallopian tube towards your womb. This incredible journey takes about 3 days. Once it reaches the uterus, it will hopefully implant into the uterine lining. It is at this stage that your body will start to produce hCG, which is what your home pregnancy test detects to give you a positive reading.

Although at this stage your baby only resembles a ball of cells, it is already working hard to become the cute little baby you will meet in about 8 months' time. This cluster of cells is known as a blastocyst and will soon begin the complex process of developing into an embryo.

Early Pregnancy Symptoms

If you’ve been waiting for a positive test for a while, you may be feeling quite anxious at this stage. However, in terms of pregnancy symptoms, many mums don't notice anything just yet. Some, however, experience tender breasts or feel more tired than usual. You may also notice a small amount of bleeding in your knickers. This isn't your period but could be implantation bleeding.

When the fertilised egg attaches to the lining of the uterus, it can sometimes cause a small amount of bleeding. This can be mistaken for a light period, although nothing is definite until you see those lines on the test – good luck!

Important Steps for Mum

If you have been planning your pregnancy, you are likely already taking folic acid. If not, now is the time to start. Folic acid is crucial for the development of your baby's neural tube. The NHS recommends taking 400 micrograms of folic acid every day from before you are pregnant until you are 12 weeks pregnant.

For more information on which vitamins you need, take a look at the NHS guide on supplements in pregnancy.

Looking Ahead

This week marks the start of an incredible journey. Your body is preparing to support the development of your baby, and while you may not feel much different yet, big changes are happening on a microscopic level.

We’re here to support you every step of the way. Stay positive and take care of yourself, and soon you may see those exciting two lines on your pregnancy test.

This article has been written using the latest guidance and information from trusted sources, primarily the NHS. This information should not replace professional medical advice. Always consult with your healthcare provider for advice tailored to your personal health and circumstances.