This is what i think is gonna happen in Kasamh Se in typical Ekta Kapoor Style:
Jai Walia will divorce Bani because of the Child. Bani will be helpless. She and Rano will be turned out of the house and will go to Pushkar's where Seema Bhabhi will taunt Bani. Meanwhile Roshni will posion Pia's mind against Bani and will create a rift between the two sisters.
Bani's child will be born in Mount Abu and suddenly Jai Walia will melt and want to accept Bani and his child but sorry!!! Bani has just gotten married to a new character (most probably Angad of KYPH).
I also feel Rano will marry Ranveer. Ranveer will reform but then Jigyaasa will poison Saahil and together they will haunt the sisters
In short Ekta Kapoor will ruin the show forever as she has always been doing,