My sister got conceived at the month of August. At the starting of the 5th month she noticed  bleeding . After consulting the doctor they said placenta was moved to the down position so , my sister take bed rest but now in 5th month ( January) suddenly at midnight got labor pains and amniotic fluid was broken. After joined in the hospital baby was aborted . But we don't know the reason that why it was happened at 5th  month.