paano po ba malalaman kung sino ang naka buntis sakin?1st naka sex ko feb 27 and 2nd march 5

i feel like si march 5.. if almost 7 weeks kana nung april 16.. your 1st and 2nd week was around feb 29 to march 13. So in between these dates nagyari yong ovulation , fertilization and conception Charrr hehe