give me advice please :)

hi ladies - just curious to get people’s thoughts here. so my last period was oct 1-oct 5. i’m expecting my period next friday, oct 29.

i had sex this past sunday (it was really early in the morning around 3 am). I’m not on birth control, and we used a condom but i think it may have slipped and some may have gotten in me.

given where i was at in my cycle, do you think i have a high chance of pregnancy? i’m not tracking ovulation. when is the earliest i can test?