Not 100% sure when i ovulate but is pregnancy likely 6 days after predicted ovulation day if i consecutively had sex twice using only withdrawal ?

Possible: Pregnancy is know to occur from sex on any and all days of the cycle. If you miss your period by 4-5 days, do a pregnancy test. If the result is negative, repeat the test 4-5 days later, unless you a get a period by then. Use first morning urine and follow the instructions for the test carefully. If you do not wish to be pregnant, use contraception all the time, every time. You may consider implanted contraceptive, or IUD. Practice safe sex. Get HPV vaccine.