I think you all are misunderstanding the situation. From what I have understood so far in the serial is that Bhavana cannot concieve, and that's why they don't have any kids. Maybe they want permission from bapuji to adopt a child or something like this. We should wait and watch...
I think you are rite!! Cuz i remember that once a while bk, Bhavana said to Manoj that there is this baba coming to town and i wanna go see him...it is said that no one goes home empty handed and maybe we can have kids after that....remember??
I always thought that they couldn't concieve! Maybe Manoj wants to knw if they can go have some treatment done to help them...