Sai baba let all girls who want to get kids chant this Mantra I found in the internet.
Let them be happy, forgive all sins of past, present and future lives.
Mantra for pregnancy
Om hreem uljalya thah thah om hreem
The regular and continuous chant of this mantra for 108 times with lighting of lamps of mustard oil or butter oil helps in getting pregnancy
I wish all girls and women happiness with lovely kids.
Mantra for protectiion of pregnancy
Om rudra bhi drava ho, ha ha ha hoo ka
The pregnant woman should chant this mantra for 108 times a day.
Wish you all a happy life.