Although growth spurts can happen anytime during the first year, your baby will …

Although growth spurts can happen anytime during the first year, your baby will most likely have his initial spurt between one and three weeks; and another between six and eight weeks. After that, you can expect more at three months, six months, and nine months. The good news: A baby's growth spurts usually last only a couple days, so your baby (and your life) should get back to normal soon.

Source by bethrap