@ Satish,
The dasa lord Saturn is in the Lagna of Saptamsa, the chart for children. Its nakshatra lord is Rahu. Rahu is also the antardasa lord. Rahu sits in a Dagdha rasi if Tula in the rasi chart and sits in the 8th house in Saptamsa. With it in Saptamsa is Jupiter, the karaka of children who is in his debilitation house and Sun. Jupiter is, incidentally, also in the 8th house in the Rasi chart. The trio is aspected by Mars. These placements are not good.
Pl perform a Shanti for Rahu and Jupiter also.