RAINY NIGHT YASH GOT INTOXICATED RE:ARTI IN D RAIN

And she may have gotten drunk or someone gave her a drink etc. or even Yash a Drink

And when they returned home wham consummation of marriage and BABY ON BOARD ..LOL

THIS HAS TO BE LINKED THAT RAINY NIGHT because his memories goes back to her playing in the rain and he was so Intoxicated with love that night that they consummated the marriage.

ARTI WAS PROBABLY INTOXICATED AND YASH HAD IS WAY DUE TO HER OR THEIR VULNERABLE STATE