My Daughter, Age 24, Just Gave Birth To Her 4th

My daughter, age 24, just gave birth to her 4th child. She has been experiencing severe pelvic pain and having blood clots. Upon the birth of her child, the doctor made a comment regarding the placenta when he delivered it. The comment "the placenta is eaten up". NO explanation given to my daughter or her husband during this time. My question to you is what could he have meant with this statement.