The first month at home with a newborn is one of the most disorienting experiences of early parenthood. The information and advice available is vast and often contradictory. What helps most is a clear sense of what is medically important to monitor, what is normal, and what can safely be set aside. This guide addresses the practical and clinical essentials of the first four weeks.
Healthbooq covers newborn and infant health across the first years.
The First 24 Hours
The immediate period after birth involves several routine assessments and interventions. The NIPE (Newborn and Infant Physical Examination) is performed within the first 72 hours and covers the four core screening areas: eyes, heart, hips, and testes in boys. Vitamin K is offered to all newborns to prevent haemorrhagic disease of the newborn; the IM injection is the most effective route but parents may choose oral vitamin K instead.
Most newborns have their first feed within the first hour after birth. The initial substance is colostrum – a thick, yellowish fluid rich in immunoglobulins that protects the baby's gut until mature milk comes in at 2-4 days.
Feeding in the First Month
Frequent feeding is normal. Breastfed newborns typically feed 8-12 times per 24 hours; formula-fed babies slightly less frequently due to the slower digestion of formula. Cluster feeding – periods of very frequent feeding, often in the evenings – is normal and does not indicate low milk supply. It reflects the baby's attempts to stimulate supply and satisfy changing energy needs.
All newborns lose weight in the first few days: up to 7-10% of birth weight is acceptable. Regaining birth weight by 10-14 days is the standard expectation. Failure to regain by day 14 warrants a feeding assessment. Wet nappies provide a useful proxy for adequate intake: from day 5, the baby should produce at least 6 wet nappies in 24 hours.
Normal Newborn Behaviour
Newborns sleep 16-18 hours per day but rarely for stretches longer than 2-4 hours, because their stomach capacity is tiny and feeds are frequent. The lack of consolidated night sleep in the first weeks is not a sleep problem; it is physiologically normal for this developmental stage.
Newborns have a limited behavioural repertoire: they communicate primarily through crying. Hunger, tiredness, wind, and discomfort are the most common explanations for crying, but the baby's communication is not yet precise enough for parents to reliably distinguish between them. This ambiguity is normal and does not reflect a parent's failure to understand their baby.
Newborns are highly sensitive to the face and voice of their caregivers. Even at birth, research by Mark Johnson at Birkbeck University has shown that newborns preferentially attend to face-like stimuli. The foundation of the parent-infant relationship is laid in these first weeks through close physical contact, eye contact, and responsive caregiving.
What to Monitor in the First Month
Weight. Weight should be checked by a health visitor in the first weeks. The trajectory of weight gain matters more than any single measurement.
Jaundice. Yellow skin and eyes (scleral icterus) should be assessed by the midwife or GP if it appears in the first 24 hours, if it is deepening, if the baby seems excessively sleepy, or if it persists beyond 2 weeks.
Umbilical cord. The cord stump typically separates by 1-3 weeks. It should be kept clean and dry. Signs of infection (surrounding redness, discharge, smell) warrant assessment.
Bowel and bladder output. Adequate wet nappies and transitioning stool colour (meconium to transitional to established feed-related stool) are signs of adequate feeding and normal gut function.
The 6-8 Week Check
The end of the immediate newborn period is marked by the 6-8 week check, typically carried out by the GP and health visitor. This includes a repeat physical examination (NIPE repeat), assessment of feeding and growth, developmental observations, and a postnatal review for the mother. First immunisations are given at 8 weeks.
Key Takeaways
The first month with a newborn is characterised by establishing feeding, monitoring growth and weight gain, learning the baby's behavioural cues, and navigating the sleep disruption that comes with frequent night feeds. Medically, the key milestones are regaining birth weight by day 14, passing meconium within 48 hours, and producing adequate wet nappies (at least 6 per day from day 5 onwards). The 6-8 week check marks the end of the immediate newborn period. Parents benefit most from realistic expectations: cluster feeding, frequent waking, and uncertainty about why the baby is crying are normal features of this period, not signs of problems.
