How many weeks postpartum am I?
Enter the day your baby was born. You get your week and month postpartum, your baby's age the way the clinic counts it, and — for the first twelve weeks — what is commonly happening and which movement is generally appropriate after your kind of birth.
General information for education, not medical advice and not a diagnosis. Nothing you enter is stored. If something feels wrong, call your midwife, doctor or local emergency number.
Only needed for a baby born early: it gives the corrected age.
How this works
Day 0 is the day of birth and week 1 covers days 0 to 6, the same numbering the MatraBloom app uses. Months are calendar months, the way your clinic counts them. Corrected age subtracts the weeks a baby was born early, which is how paediatricians read growth and development for premature babies.
Common questions
Is week 1 the week of the birth or the week after?
The week of the birth. Day 0 is the day your baby was born and week 1 runs to day 6, so at seven days you are in week 2. Some apps count the first full week as week 0; ours matches the NHS and ACOG way of describing the first week.
How long is the postpartum period?
Most guidance treats the first six to eight weeks as the acute period and the first twelve weeks as the fourth trimester, with ACOG describing postpartum care as continuing for up to a year. Recovery is not finished at the six-week check.
Why does my baby's age in months not match weeks divided by four?
Because months have 30 or 31 days, not 28. A baby of 12 weeks is about 2 months and 3 weeks old, not 3 months. Clinics use calendar months for vaccines and growth charts, so that is what this calculator shows.
Turn this into a daily plan
MatraBloom builds a short session for the week you are in, asks how you are each day, and reminds you gently. Free on Android.
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