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Week 38: Baby develops a firm grasp. Thirty-eight weeks into your pregnancy, or 36 weeks after conception, your baby is developing a firm grasp. Your baby's toenails have reached the tips of his or her toes. His or her brain might weigh about 14 ounces (400 grams). After birth, your baby's brain will continue to grow.
Seemingly almost overnight, your child has morphed from a chubby toddler to a lanky grade-schooler whose limbs seem to be growing every day. During this stage of child development, referred to as middle childhood, kids can grow an average of 2 to 2.5 inches per year. All children develop at different rates.