Chance na mabuntis (Withdrawal)

Hi mga mommies, may chance po ba mabuntis. 2 months old na baby ko and nagkaroon ng period after a month pagkapanganak. Withdrawal method. Nagdo kami last month and dapat next period ko ay this week pero wala pa. Sana po may sumagot, curious lang. Withdrawal kami ever since magbf gf pa lang kami..