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4 Weeks Pregnant - Signs of Pregnancy


At 4 weeks pregnant you may begin to experience some signs of pregnancy such as nausea, breast tenderness/ sensitivity, an increased need to urinate, feeling extremely tired and hormonal. You may even have some food cravings or dislikes for things you previously enjoyed such as tea and coffee! Many women also notice a metallic taste in their mouths.

It is important to continue eating a healthy diet for both your own well-being and that of your developing baby. These symptoms are caused by rapidly increasing levels of the hormone HCG (Human Chorionic Gonadotrophin) which is the hormone that pregnancy tests detect and the presence of which indicates pregnancy.


At the end of this week the cluster of cells that is to become your baby will finish implanting into the womb lining and is officially known as an embryo!

Measuring around 2mm, your baby is already visible to the naked eye! His spine and brain are beginning to develop. Around the embryo, the membrane known as the amniotic sac is forming. This sac is filled with clear, water-like fluid known as amniotic fluid and it is in this fluid that your baby will float and be protected for the remainder of your pregnancy.

Pregnancy Week by Week Calendar

Weeks 1 - 10Weeks 11 - 20Weeks 21 - 30Weeks 31 - 40+
1 week pregnant11 weeks pregnant21 weeks pregnant31 weeks pregnant
2 weeks pregnant12 weeks pregnant22 weeks pregnant32 weeks pregnant
3 weeks pregnant13 weeks pregnant23 weeks pregnant33 weeks pregnant
4 weeks pregnant14 weeks pregnant24 weeks pregnant34 weeks pregnant
5 weeks pregnant15 weeks pregnant25 weeks pregnant35 weeks pregnant
6 weeks pregnant16 weeks pregnant26 weeks pregnant36 weeks pregnant
7 weeks pregnant17 weeks pregnant27 weeks pregnant37 weeks pregnant
8 weeks pregnant18 weeks pregnant28 weeks pregnant38 weeks pregnant
9 weeks pregnant19 weeks pregnant29 weeks pregnant39 weeks pregnant
10 weeks pregnant20 weeks pregnant30 weeks pregnant40+ weeks pregnant

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