This is what India Forums reported a month ago...
Pakhi will become the surrogate mother of Sai and Virat's baby. It will so happen that Sai will not be able to conceive. So, finally Sai and Virat decide to ask Pakhi to become surrogate mother of their baby.
The doc said and i quote “you can’t become a mother now and even if you tried, it won’t be long term”! So what’s the biological takeaway of this statement? If she can’t then how surrogacy? If surrogacy happens, she becomes a mother! 
if surrogacy happens how will the audience take? Pakhi is still a sasti copy of Vamp! How will the audience accept? Sai Virat Chavan will agree to it, but audience won’t.