Recite Darood Shareef odd times (1, 3, and 5) and then recite eleven times (یا خالق یا مصور یا واحد ) does it continually for forty days. Think about the child while reciting Insha’Allah He will bless you with baby boy.
A VERY EFFECTIVE INCANTATION OR WAZIFA:
I saw professor Ghazi Ahmed Late in my dream. I got a very effective wazifa from his son. Remember that professor became Muslim from Indian who gifted fifteen crore Darood Shareef at Holy Prophet ﷺ. In odd times recite Darood Ibrahimi before and after, and recite 313 times (یا اللہ یا سلام) it is more effective at tahajud time (Time before Fajar prayer), you can do it in another time. It is permitted only for the people who pray five times a day. I have done it for a week and Allah almighty has blessed me with inner eye (spiritual eye). Even a king will not be as happy at getting back his lost kingdom as I was at getting my spiritual eyesight.