My theory of Pihu being conceived before wedding is getting stronger
. Today Shalini said they're married for 8 years. And in upcoming scene, where Pihu's class is mentioned 3. Unless she went to class 1 in 5yrs, she has to be 7.5-8yrs in Class 3 normally 
if she is about to complete 3rd considering year end she would be about 9..... So so so....
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