Friends..I have predicted Saarrthi after a long time. After so much thinking...I have concluded that this may take place: ( I MAY BE WRONG SO DON'T TAKE IT SERIOUSLY)
1) After her insult in front of everyone..Bhoomika might leave the house.
2) The baby will be born.
3) Arjun will try to find her but will have no real consideration.
4) Bhoomika will be in hiding
5)All the other family members will force Arjun to marry Shefali.
6) Arjun will hesitate at first but then he will see that his child needs a mother.
7) He agrees to marry Shefali.
8) Now he comes to know the truth...about Shefali.
9) Just before the wedding or may be on the wedding day he will expose Shefali.Might ask her evrything and give her 2 tight slaps.
10) So the marriage won't take place .
I actually thought about this because Karan said in SBS interview that Shefali will be exposed after the baby is born.Also because in Mahabharat Arjun had 2 wives!