First of all you don't need to type " URGENT " .URGENT: Do anyone have experience of not having birth certificate from India and which document could be acceptable if don't have birth certificate: URGENT
My friend had the similar situation, for birth certificate issue you will have to provide affidavit stating that you don't have it available, and also you will apply for it and get it from India. You will have to get it "ANY HOW" or there will be complications.
And untill you get your birth certificate, as supporting documents you need to provide leaving certificate from highschool or university.