I dont believe this spoiler. Even if it is true, Sai would never believe that Virat got pp pregnant. Yes, she believes that he made a commitment to pp, has not moved on from pp fully, still cares for her a little more than he should for just a friend and is emotionally invested in her. But she also knows hes righteous, he would never sleep with his brothers wife. She accused him of hiding the truth, not owning up to his true feelings, and of being emotionally involved with his current vahini, but never of physical infidelity. She also feels "cheated" and "betrayed" because she has sensed the change in their relationship dynamic to becoming more than acquaintances and roommmates to actually being spouses so she is affected by the fact that they are behaving like spouses when he has not broken commitment made to PP. Thats why as a wife- who was provoked by a whole gang of people against her, who is possessive about her husband and who seeks full disclosure from her husband but didnt get it from him - she said whatever she had to. Its really tiresome to see extreme pov's.
Just chill and watch the monday episode- there must be definitely be some good Sairat scenes in store for us next week....baaki ka dekha jayega!