noun which may take the genitive case particle 'no'
postnatal; postpartum; after childbirth
Used as a no-adjective to describe the period, care, or conditions after giving birth.
Postnatal care is very important.
My physical condition after childbirth just won't return to normal.
Compound of 出産 (shussan, 'childbirth') + 後 (go, 'after'). The reading しゅっさんご follows standard rendaku and on'yomi patterns.