I joined for this campaign early and pinned a tweet on my twitter account until now. How do i know if my account is accepted?

As long as you know that you have followed correctly all the instructions and tasks then I think there is nothing to be worried about. But I hope OP will provide the spreadsheets soon so we can monitor our work progress.
agreed, spreadsheets make it easier to monitor stake and we accepted or not
dispel doubts over what we have done, and now just waiting goodnews from dev about spreadsheet publishing