Milk coming in
Also called milk came in, my milk came in, milk has come in, when does milk come in
Milk coming in is the point, often around two to four days after birth, when the breasts feel noticeably fuller as more milk arrives. It marks the change from early colostrum to mature milk.
How it's said
Waiting for my milk to come in but might be another day or so.
Now, I never really noticed when my "milk came in" because I was feeding so often, so I didn't pick up any change of milk type.
Milk came in around day four-ish with my first baby...
Who says it
Not to be confused with
Where it came from
It's an everyday phrase that the NHS uses as it is: when the breasts become fuller a few days after birth, this is often referred to as your milk coming in. The clinical name is lactogenesis II, the second stage of milk production, which follows the colostrum phase and is set off by a drop in progesterone after the placenta is delivered.
Parents tend to tell it by the day, as in day 3 or day 4, and many write it in quotation marks. Brand guides put the phrase in quotes too, then explain what it means.