GAYatri//chotu ??

Hey can someone please fill me in ? im lost . Ive been watching KGGK for along time but i stopped watching it for a few months before the recent leap happened, and now im starting to watch it again. The thing i dont get is that whos chotu ?? ... well i know that hes gayatri's son but whos the father ? .. and what ever happened to gayatri before the leap ? IF someone could please help me that would be great 😃