Is Krishna so dumb?

After listening to Krishna's last sentence in today's episode, it is evident that Krishna perfectly knows what's going to happen in the future. All these days, I was thinking how come Krishna could be so dumb that he even don't know no one can hide the pregnancy or lie about it.

He has some hidden agenda in keeping this drama alive...

1. He may want to make Pratigya realize what is she missing by not consummating the marriage.
2. He may want to show her, how much her own family and his family will be happy if their married life is successful. Pratigya had always complained that her family is very unhappy with this marriage.
3. He may be thinking, Pratigya might yield for the pressure...

But from the story point of view, I suspect this is to set stage for Angad's war on Krishna. Pratigya and Krishna didn't visit doctor even with Pratigya's bad health. They just returned home after spending time outside.
Now, Angad will come and spill the beans about the night Pratigya spent in his captive. This will widen the rift between Kriya.

Krishna can't be that dumb....