Children's Age-by-Age Guide: Birth to 3 Months

Cognitive Milestones

Crying is your baby's language and soon you'll be able to distinguish cries of pain, hunger, and fear, which will help you become a more confident parent. He'll turn his head when he hears your voice and he'll react to noise, motion, and light.

Smart Strategy:

Expose your baby to different stimuli such as soft toys, music, and the outdoors so he becomes more aware of his surroundings.

• Birth to 2 months -- The first of three doses of the Hepatitis B (Hep B) vaccine should be given by age 2 months. The second dose should be administered at least one month after the first dose.
• 2 months -- Diphtheria, Tetanus, Pertussis (DtaP)
• 2 months -- H. influenzae type b (Hib)
• 2 months -- Inactivated polio (IPV)
• 2 months -- Pneumococcal conjugate (PCV)