Bringing a newborn home is exhilarating and terrifying in equal measure. Roughly 3.6 million babies are born in the United States each year, according to the CDC’s National Center for Health Statistics, and nearly every set of new parents shares the same fear: am I doing this right? The good news is that infant care fundamentals are well-established and backed by decades of pediatric research. The basics — safe sleep, proper feeding, timely vaccinations, and knowing when something warrants a doctor’s call — form a reliable framework that keeps babies healthy through their most vulnerable year. For a broader look at proactive health habits for the whole family, our preventive health and wellness guide covers screenings, nutrition, and more.
The First Week Home: What to Expect
Your baby will sleep most of the day — 16 to 17 hours in scattered stretches of 2 to 4 hours. Newborns don’t distinguish day from night, and it takes weeks before any circadian rhythm emerges. During waking periods, feeding and diaper changes dominate. Expect 8 to 12 feedings and 6 to 10 wet or soiled diapers per day by the end of the first week.
It’s normal for newborns to lose 7% to 10% of their birth weight in the first few days. Breastfed babies typically regain birth weight by 10 to 14 days; formula-fed babies may regain it slightly sooner. Your pediatrician will check weight gain at the first visit, usually within 3 to 5 days of discharge. The umbilical cord stump will dry and fall off on its own within 1 to 3 weeks — keep it clean and dry, fold the diaper below it, and give sponge baths rather than tub baths until it detaches.
Jaundice (a yellowish tint to the skin and eyes) is common in newborns, affecting about 60% of full-term babies according to the American Academy of Pediatrics (AAP). Mild jaundice usually resolves on its own with frequent feeding. If the yellow tint deepens, spreads to the belly or limbs, or your baby becomes lethargic or difficult to wake for feedings, contact your pediatrician promptly — severe jaundice requires treatment with phototherapy.
Feeding Your Baby: Breast Milk, Formula, or Both
The AAP recommends exclusive breastfeeding for the first six months of life, with continued breastfeeding alongside solid foods until at least 12 months. Breast milk provides optimal nutrition, antibodies that protect against infections, and reduces the infant’s risk of ear infections, respiratory illness, allergies, SIDS, and childhood obesity. However, breastfeeding doesn’t work for every family, and formula is a safe, nutritionally complete alternative.
Breastfed newborns typically feed 8 to 12 times per 24 hours. Signs that baby is getting enough include 6 or more wet diapers and 3 to 4 stools per day by day four, steady weight gain after the first week, and the baby seeming satisfied and content after feedings. If you’re struggling with latch, supply, or pain, a board-certified lactation consultant (IBCLC) can help — most hospitals and many pediatric offices have one on staff or can provide a referral.
Formula-fed babies typically eat 2 to 3 ounces per feeding in the first weeks, gradually increasing to 4 to 6 ounces by two months and 6 to 8 ounces by four months. Use only FDA-approved infant formulas and follow preparation instructions exactly — over-diluting or concentrating formula can be dangerous. If your baby has persistent spit-up, fussiness, or signs of a milk protein allergy (blood in stool, rash, excessive crying), your pediatrician may recommend switching to a hydrolyzed or soy-based formula.
Whether breastfeeding or formula feeding, never prop a bottle and walk away. Propped bottles increase the risk of choking, ear infections, and dental decay. Hold your baby in a semi-upright position during feedings and burp them every 2 to 3 ounces or when switching breasts.
Safe Sleep Practices
Sudden Infant Death Syndrome (SIDS) claims approximately 1,400 lives per year in the United States, according to the CDC. The AAP’s safe sleep guidelines have reduced SIDS deaths by more than 50% since their introduction, and following them is one of the most important things you can do as a parent.
Always place your baby on their back to sleep — for every sleep, including naps. Use a firm, flat sleep surface (a crib, bassinet, or play yard that meets Consumer Product Safety Commission standards) with a fitted sheet and nothing else. That means no pillows, blankets, bumper pads, stuffed animals, or sleep positioners in the sleep area. Room-sharing (baby sleeps in your room but in their own sleep space) for at least the first 6 months, and ideally 12 months, reduces SIDS risk by up to 50%.
Do not bed-share (sleeping in the same bed as your baby). The risk of sleep-related death increases significantly with bed-sharing, particularly when combined with soft bedding, parental smoking, alcohol use, or extreme fatigue. If you fall asleep while feeding the baby in bed, move them back to their own sleep surface as soon as you wake.
Avoid overheating. Dress your baby in no more than one layer more than what you’d wear comfortably. Sleep sacks (wearable blankets) are a safe alternative to loose blankets. Keep the room temperature between 68 and 72 degrees F. A pacifier offered at sleep time has been shown to reduce SIDS risk, though the mechanism isn’t fully understood — if your baby rejects it, don’t force it.
Vaccination Schedule: The First Year
Vaccines are the single most effective tool for protecting infants from life-threatening infectious diseases. The CDC immunization schedule for the first year includes:
- Birth: Hepatitis B (first dose)
- 2 months: DTaP (diphtheria, tetanus, pertussis), IPV (polio), Hib (Haemophilus influenzae type b), PCV13 (pneumococcal), Rotavirus, Hepatitis B (second dose)
- 4 months: DTaP, IPV, Hib, PCV13, Rotavirus (second dose)
- 6 months: DTaP, PCV13, Rotavirus (third dose if applicable), Hepatitis B (third dose), Influenza (annually starting at 6 months)
- 12 months: MMR (measles, mumps, rubella), Varicella (chickenpox), Hepatitis A (first dose), PCV13 (fourth dose)
Mild side effects — low-grade fever, fussiness, redness at the injection site — are normal and typically resolve within 48 hours. Acetaminophen (Tylenol) dosed by weight can help with discomfort; do not give ibuprofen to babies under 6 months. Serious vaccine reactions are exceedingly rare — the CDC monitors vaccine safety continuously through systems like VAERS and the Vaccine Safety Datalink.
Developmental Milestones to Watch For
Every baby develops at their own pace, but the AAP and CDC provide milestone guidelines that help identify potential developmental delays early when intervention is most effective.
0 to 3 Months
Lifts head during tummy time, tracks objects with eyes, responds to loud sounds, begins to smile socially by around 6 to 8 weeks, makes cooing sounds, brings hands to mouth, and recognizes familiar faces. Tummy time — placing baby on their stomach while awake and supervised — builds neck, shoulder, and core strength. Start with 3 to 5 minutes several times a day and gradually increase as baby gets stronger.
4 to 6 Months
Rolls over (front to back first, then back to front), reaches for and grasps objects, transfers objects between hands, babbles with consonant sounds (“ba,” “da”), laughs, sits with support and eventually without it. This is also when most babies show signs of readiness for solid foods: good head control, sitting with minimal support, opening mouth when food is offered, and showing interest in what you’re eating.
7 to 9 Months
Sits independently, crawls or scoots, pulls to stand using furniture, uses pincer grasp (thumb and forefinger) to pick up small objects, responds to own name, begins to understand “no,” and may show stranger anxiety. Baby-proofing becomes urgent at this stage — cover outlets, secure heavy furniture to walls, install baby gates at stairs, and remove small objects that pose choking hazards.
10 to 12 Months
Cruises along furniture, may take first steps, says “mama” or “dada” with meaning, follows simple instructions (“give me the ball”), waves bye-bye, uses objects correctly (drinks from a cup, brushes hair with brush), and points to show interest. If your baby is not meeting several milestones in a given age range, discuss your concerns with your pediatrician — early intervention programs can make a significant difference.
Introducing Solid Foods
The AAP recommends introducing solid foods around 6 months of age, when breast milk or formula alone no longer meets all of a baby’s nutritional needs — particularly for iron and zinc. Start with iron-fortified single-grain cereal, pureed vegetables, pureed fruits, or pureed meats. Introduce one new food at a time, waiting 3 to 5 days before adding another, to watch for allergic reactions.
Current guidelines from the NIH-funded LEAP study recommend introducing common allergenic foods — peanuts (as thinned peanut butter or peanut puffs, never whole nuts), eggs, dairy, tree nuts, fish, wheat, soy, and sesame — early and regularly, starting around 6 months. Early introduction (rather than avoidance) has been shown to reduce the risk of developing food allergies by up to 80% for peanuts and significantly for other allergens.
Never give honey to babies under 12 months due to the risk of infant botulism. Avoid cow’s milk as a primary drink until after the first birthday (small amounts in cooking are fine). Watch for choking hazards: grapes, cherry tomatoes, hot dogs, popcorn, hard candy, whole nuts, and large chunks of raw vegetables should not be given to babies. Cut round foods lengthwise into strips rather than circles.
When to Call the Pediatrician — and When to Call 911
New parents often struggle to distinguish normal infant behavior from signs of illness. Here are clear guidelines for when to seek medical attention.
Call your pediatrician for: fever over 100.4 degrees F (rectal) in a baby under 3 months (this is always an emergency — see below), persistent vomiting or diarrhea lasting more than 24 hours, refusal to eat for more than two consecutive feedings, fewer than 4 wet diapers in 24 hours (sign of dehydration), persistent rash that doesn’t blanch when pressed, unusual fussiness or lethargy beyond normal patterns, and any concern that something seems “off” — parental instinct matters.
When to seek emergency care: Call 911 or go to the nearest emergency room if your infant has a rectal temperature of 100.4 degrees F or higher and is under 3 months old, has difficulty breathing (flared nostrils, rib retractions, grunting), turns blue or gray around the lips or face, has a seizure, is unresponsive or extremely difficult to wake, or shows signs of severe dehydration (no wet diapers for 6+ hours, sunken soft spot, no tears when crying).
Frequently Asked Questions
How often should my newborn see the pediatrician?
The AAP recommends well-child visits at 3 to 5 days after birth, then at 1, 2, 4, 6, 9, and 12 months. These visits include growth measurements, developmental screening, vaccinations, and guidance on feeding, sleep, and safety. Don’t skip them, even when your baby seems perfectly healthy — many conditions are caught during routine screening before symptoms appear.
Is it normal for my baby to spit up after every feeding?
Mild spit-up is extremely common and usually harmless — the medical term is gastroesophageal reflux (GER), and it affects more than half of infants. Most babies outgrow it by 12 to 18 months. However, if spit-up is forceful (projectile vomiting), contains blood or green bile, or your baby is not gaining weight, consult your pediatrician to rule out more serious conditions like pyloric stenosis or GERD.
When can I take my newborn out in public?
There’s no strict rule against taking a healthy newborn outside, but the AAP advises caution in the first two months when the immune system is most vulnerable. Avoid crowded indoor spaces, ask anyone who holds the baby to wash their hands, and keep the baby away from people who are visibly ill. Outdoor walks in fresh air are generally fine and good for both baby and parent.
How do I know if my baby is getting enough breast milk?
Since you can’t measure breast milk intake directly, focus on output and growth. By day 4, your baby should have at least 6 wet diapers and 3 to 4 stools per day. Steady weight gain (roughly 5 to 7 ounces per week in the first few months) is the most reliable indicator. Your pediatrician will track growth on standardized charts at each well-child visit.
Your First-Year Action Plan
Infant care can feel overwhelming, but it’s manageable when broken into priorities. First, nail the non-negotiables: back-to-sleep every time, proper feeding techniques, and keeping every well-child and vaccination appointment on schedule. Second, baby-proof your home before your infant becomes mobile — usually around 6 to 7 months. Third, trust your instincts but don’t rely on them alone: when something worries you, call your pediatrician. They would far rather answer a “silly” question than treat a condition that could have been caught earlier. The first year is a sprint of learning for both you and your baby, and the foundation you build now — in nutrition, safety, bonding, and medical care — shapes everything that follows.