why did shravan take kasak's baby?

i am sorry i haven;t watched the serial for a while, why did shravan take kasak's baby? even tanisha was shown holding the baby happily. i thought tanish was pregnant.

kasak was supposed to be somewhere abroad. what was she doing in anurag;s house & not in bajaj's house?

i am really confused.

did they show why prem married palchin?

prem married palchin actually to get badla/revenge coz she recked his party once and kasak had turned evil and had become the Surrogate mother of tanisha and shravens baby and bajaj and prerna were against the idea so tanisha persuade her to stay at the basu house and so she has been living there and trying to split tanisha and shraven coz she still wanted shraven
and now she died after giving birth to her child and she told bajaj it was shravens fault and so thats why bajaj went off to kill him and then all this happend
hope this helps 😃

-Tanya