Asking lang po, please respect

Hello, ask lang po. Not yet delayed pa naman po, last mens ko po nov 25-28. Based po sa period tracker ko dec 6-14 ay fertile days ko po (dec 12 ovulation day). Then, dec 5, 13 and 14, my boyfriend and i made love pero lahat po yun is withdrawal. Ask lang if high chances po ba mabuntis if nag sex after ovulation and when po ang best time to take pt? Dec 25 po expected period ko. Thank you po sa sasagot.