Reference: Fataawa ash-Shaykh al-‘Allaamah Muhammad Naasiruddeen al-Albaanee fil-Madeenah wal-Imaaraat – Page 232
Fataawa al-Imaaraat – Page 109
Question: What is the ruling regarding the blood which flows from the woman a short period before she gives birth; Is it postpartum blood, or is it menses [blood]?
Response: This is [the blood of] menses; Because the postpartum blood flows after childbirth.