What happens at a 1-month baby checkup?

At the one-month appointment, your pediatrician checks muscle tone, overall health, and growth measurements. Your baby will also receive their second Hepatitis B vaccine, typically given between months 1 and 2.

How can I tell if my baby has tongue-tie affecting breastfeeding?

Signs of tongue-tie include cracked nipples, baby tiring quickly while sucking, and swallowing excessive air during nursing. A thickened frenulum can cause these breastfeeding difficulties even a month after birth.

What developmental milestones should my 1-month-old reach?

By one month, babies can focus their eyes for short periods and are no longer considered newborns. This represents an important transition in their early development stages.

When should I be concerned about breastfeeding problems?

If breastfeeding issues persist after one month, consult your pediatrician about possible tongue-tie. Sometimes a minor surgical procedure can resolve feeding problems within just a few days.

1-Month Baby Development: Post Healthy Pregnancy Guide 2026

Congratulations! Your son is one month old!

This is an important milestone. He’s no longer a newborn, he is a baby. He can now focus his eyes for a short time. You’ll want to schedule your one month appointment with your pediatrician if you haven’t already [1].

If you are having trouble breastfeeding a month into his life, it is possible that a short thickened frenulum has created problems. Signs of this include cracked nipples, he quickly tires of sucking or he swallows lots of air while nursing. Sometimes a small operation helps to establish feeding in just a few days [2]. Talk to your doctor if you suspect this is the case.

At the first doctor’s appointment, your pediatrician will check the muscle tone of the baby, his overall health and growth, and give the second Hepatitis B vaccine (usually given between month 1 and 2) [1].