How high are your chances of getting pregnant from precum but you took plan b 65 hours afterwards? and you were on cycle day 9 or 10 when sex occurred

Almost zero: The chances of getting pregnant from sex on cycle days 9-10 (counting day 1 as the first day of period bleeding) are usually low if one has 28-30 day cycles. The chances of getting pregnant from precum is low, and the chances of Plan B not working at 65 hours is very low. Combining all 3 events, there is almost no chance of pregnancy from this one sexual event. Always keep some condoms nearby.