Early Training: Your Baby in the Fourth Week of Pregnancy
In the fourth week of pregnancy, the embryo has already grown significantly and begins to take shape. Initial structures such as the neural tube, which will later become the brain and spinal cord, begin to form. The first signs of the heart and blood vessels also develop, marking the beginning of the circulatory system. This is a crucial time of development and growth, where each cell is playing a vital role in the formation of the future baby.
Find the week number you're looking for
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42The images and descriptions of your baby's development from week 1 to week 42 have been generated by artificial intelligence. Although they provide a close representation, they are not 100% accurate. To obtain accurate and personalized information about your baby's development, we recommend that you have an ultrasound and consult your doctor.