Can she get pregnant on the 2nd day from the day her period ended?

My question is, can my wife get pregnant on the second day after her periods have ended? (by having and ejeculating inside the ), We wanted to try it out, and we have done this before, and she haven't got pregnant. We use condoms and Drawback method as our usual birth control in l , as far as i heard, general day of a womans fertility falls 7 days after her periods ended, please clarify with me that is it possible, my question again is, * Having , after two days period has ended and inside, can get her pregnant? * thanks a million everyone