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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.
After three to four days, the baby begins to regain weight and should attain or surpass her birth weight by 10 to 14 days. For the next three months, your infant grows at the astonishing rate of approximately an ounce a day. Between three and six months, her weight gain declines to four to five ounces a week.