noun
1-month checkup (for a baby)
Refers to the routine health examination for an infant about one month after birth, typically conducted at a pediatric clinic or hospital.
来週、赤ちゃんの一ヶ月検診に行きます。
Next week I'm taking the baby for the one-month checkup.
Compound of 一ヶ月 (one month) and 検診 (medical examination).