Gstr 3b and gstr1 for the period before getting gstin

This query is : Resolved

Rakesh V (Querist)
Follow

17 December 2017 Dear Sir
I have registered for GST in October 2017 as online seller on eCommerce sites. I am confused if I need to file nil returns for GSTR 3B for month of July, Aug and Sept and Nil GSTR1 for Quarter ending sept
BTW I dont see July, Aug and Sept month in the dropdown after clicking 'Dashboard' button of GST filing portal. Note- I did NOT opt for composition scheme and my turnover is less that 1 Cr. also I opted for quarterly GSTR1 filing. Also its my new business established this year in October itself.
Thanks in advance.