The former Fugees singer - who already has five children, Zion David-Nesta, 13, Selah, 12, Joshua, nine, John, seven, and three-year-old Sarah with on/off partner Rohan Marley - announced her happy news at the end of her concert at Detroit`s Chene Park on 04.06.11, although she has not revealed the father.
She told the crowd: "I`m going to be taking time off to give birth."
It is thought Lauryn, 36, is in her second trimester and will give birth later this year.
Two months ago, Lauryn told the audience at one of her shows: "I keep having these children. I don`t know if I`m the most fertile woman in America."
Since 1998, Lauryn lived in both the Caribbean and an upmarket hotel in Miami but in August 2008, it was reported she was living with her mother and children in her hometown of South Orange, New Jersey.
In 2007, Lauryn`s Fugees bandmate Wyclef Jean said she was in desperate need of "psychiatric help".
He said: "LaurynHill, Mrs. Hill, The Hill, should go see a psychiatrist - period. Just seek help. At this point I really think it will take an act of God to change her, because she is that far out there."