Most healthy newborns can sleep until they wake to feed once weight gain is steady, but in the early weeks you may need to wake them every 2–3 hours.

Most couples conceive within 12 months of unprotected sex, with the best odds in the days before ovulation and lower odds as age rises.

Pregnancy weeks are counted from the first day of your last period, so the week number runs about two weeks ahead of conception.

Most full feeds last 10–30 minutes total, yet steady swallowing and a relaxed, satisfied baby tell you more than minutes do.

Most pregnancies are dated as 40 weeks (280 days) from the first day of the last menstrual period, with many births landing between 37 and 42 weeks.

Mixed formula can sit out for 2 hours, or 1 hour once a baby starts drinking from the bottle.

Many people notice the first changes around weeks 4–6, with nausea and fatigue showing up most often between weeks 6–9.

Most people get a dependable positive test around the day a period is late, or 1–2 weeks after ovulation.

Most people get the clearest result on or after the first day of a missed period, when hCG is easier to detect.

Many parents take a postnatal vitamin for 6–12 weeks after birth, then keep going while breastfeeding if diet or labs show gaps.