From the day one I am saying this preganacy is not normal as Saloni has fainitng spells. They will not show Saloni having easy preganancy or she will deliver the baby easily.
But I don't think Saloni is dying. She may have some complications in her preganacy. Trust me I have been thru 2 complicated pregnancies one being tubal which ended in miscarriage in 3rd month and 2nd one even worst but my son was born normally and in good health when my doctor had told me I had very little chance of carrying him full term I had lost 15 kgs weight in first 5 months when preg woman are suppose to gain weight
SP makers are yet capaturing anotehr issue of difficult or complicated pregnancy which will result in Saloni having a normal baby or baby with problems.
I don't think they are planning to end SP or Saloni's character thru her pregnancy. Saloni has done wonders for the serial and has won best actress awards twice. Saloni is a soul of SP and Sp is nothing without it so why would they kill her character.
I don't even think that they will marry vrinda and Nahar.
So let us just watch and enjoy.