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| Poppy seed |
No bigger than a poppy seed, the ball of cells that will develop into your baby has completed its journey from your fallopian tube to your uterus. Once settled in its new home, it will undergo the great divide — splitting into two groups. Half will become your baby (or embryo), while the other half forms the placenta, your baby's lifeline until delivery. The multilayered embryo then begins to grow into specialized parts of your baby's body. The inner layer, known as the endoderm, will develop into your baby's digestive system, liver, and lungs. The middle layer, called the mesoderm, will soon be your baby's heart, sex organs, bones, kidneys, and muscles. The outer layer, or ectoderm, will eventually form your baby's nervous system, hair, skin, and eyes.
Your Body in Week 4 of Pregnancy
While the tiny ball of cells that is your baby begins to undergo its magical transformation into a multilayered embryo, your body is going through a magical transformation of its own — from a reliable buddy to a weird and wacky science experiment. You may start exhibiting early pregnancy symptoms like bloating, cramping, and mood swings that feel similar to premenstrual symptoms. You might also experience implantation bleeding , a common (and harmless) light pink, red, or brown spotting that can occur when the egg settles into your uterus.You might feel a little pressure in your abdomen (nothing to worry about!) and your breasts may feel a little tender and become even bigger (but get ready for more growth spurts!).
Source: What to Expect
Amazing! So far, I definitely felt the cramping and bloating, but luckily no bleeding. Even though it says it's normal, it would've freaked me out. Best of all, I still haven't experienced any morning sickness, yay! My boobs got fuller and Leo's definitely noticing, lol. They feel sensitive to movement especially when I don't wear a bra around the house.
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