By week 12, your baby is roughly the size of a plum, weighing 14 grams and growing 5 to 6 centimeters in length.
The majority of your baby’s major organs are almost complete. Together with developed bones and muscles, they now have a functional circulatory, urinary, and digestive system.
Red blood cell production has begun in the liver, white blood cell production has begun in the bone marrow, and hormone secretion from the pituitary gland has begun.
Your baby’s genital organs are fully developed, they can open and close their fingers, curl their toes, swallow amniotic fluid, and urinate.