Pregnancy · Tools · Evidence
Evidence-based pregnancy and fertility guidance
Written to be read at three in the morning. Every week of your pregnancy, explained calmly — including the bits nobody warns you about.
39 guides
See all week by week →Week by week
First trimester10 weeks pregnantAt 10 weeks pregnant the baby is about 30 mm, the size of an apricot, and moving. What is…First trimester11 weeks pregnantAt 11 weeks pregnant the baby is about 41 mm, the size of a fig. Development, symptoms, week 11 in…First trimester12 weeks pregnantAt 12 weeks pregnant the baby is 5.4 cm, the size of a plum. The dating scan, development,…First trimester13 weeks pregnantAt 13 weeks pregnant the baby is about 7.4 cm, the size of a peach, and the second trimester…
30 guides
See all calculators →Calculators
BabyAdjusted age calculator for premature babiesWork out your premature baby's adjusted (corrected) age from their due date, plus actual age and…BabyBaby feeding amount calculatorWork out typical formula volumes by weight and age, shown in both ml and fl oz. Breastfeeding is…BabyBaby growth percentile calculatorWork out your baby’s weight, length and head circumference centiles on the UK-WHO, WHO or CDC…PregnancyBaby size by week calculatorHow big is your baby this week? NHS lengths and WHO 50th-centile weights from 14 weeks, in cm,…
30 guides
See all symptoms →Symptoms
SymptomBack Pain in PregnancyTwo-thirds of pregnant women get back pain. What causes it, which treatments have trial evidence,…SymptomBraxton Hicks vs Real ContractionsBraxton Hicks come and go and never build. Real contractions get longer, stronger and closer…SymptomCarpal Tunnel Syndrome in PregnancyNumb, tingling hands that wake you at night are usually carpal tunnel. Why pregnancy causes it,…SymptomConstipation and Piles in PregnancyWhy pregnancy hormones and iron tablets block you up, which remedies have real trial evidence…
30 guides
See all trying to conceive →Trying to conceive
FertilityAlcohol, Caffeine and Smoking When Trying to ConceiveSmoking: odds ratio 1.60 for infertility (ASRM). Alcohol: fecundability 0.87. Caffeine: NICE finds…FertilityBasal Body Temperature Charting: What It Confirms and What It Cannot PredictACOG says BBT charting confirms ovulation but cannot predict it; NICE advises against using it at…FertilityCarrier Screening and Conceiving with a Known Genetic ConditionIf both parents carry a recessive gene there is a 25% chance per pregnancy (ACOG). Screening…FertilityCoping With the Emotional Weight of Trying to Conceive47% of UK fertility patients report depression often or always and 4 in 10 report suicidal…
30 guides
See all is it safe? →Is it safe?
DrinkIs alcohol safe during pregnancy?No. The UK Chief Medical Officers, CDC, ACOG, NHMRC and RANZCOG all advise no alcohol in pregnancy.…DrinkIs coffee safe during pregnancy?Yes, up to 200mg of caffeine a day, about two cups of instant coffee. See what the NHS, ACOG and…FoodAre cured meats safe during pregnancy?The NHS says cook salami, chorizo and prosciutto until steaming hot. Health Canada lists dried…FoodIs deli meat safe during pregnancy?US, Canadian and Australian guidance says reheat deli meat until steaming hot. UK advice differs…
30 guides
See all country guides →Country guides
AUThe antenatal appointment schedule in AustraliaThe Australian Pregnancy Care Guidelines advise 10 antenatal visits in a first pregnancy, 7 in…AURegistering a birth in Australia: the 60-day ruleBirths must be registered with your state or territory registry within 60 days, and it is free. The…AUParental Leave Pay in Australia: rates, eligibility and deadlinesParental Leave Pay is $200.94 a day, $1,004.70 a week, for up to 130 days for babies born from 1…AUScreening tests in pregnancy in AustraliaCombined first trimester screening runs 11 to 14 weeks and the morphology scan 18 to 22. See every…
30 guides
See all baby names →Baby names
NamesBaby Names Ending in -ie and -yMore than 60 baby names ending in -ie or -y with their formal parent names, meanings and origins,…2025Baby Names Falling Out of FashionThe baby names losing ground fastest in 2025, from the change-in-rank columns ONS and NRS publish…NamesBaby Names From MythologyForty-eight mythological baby names from Norse, Greek, Roman, Irish, Welsh and Hindu tradition,…2025Baby Names Rising Fastest This YearThe fastest-climbing baby names of 2025, taken only from the change-in-rank columns ONS, NRS, the…