I had protected sex with a condom and within the 5 days leading up to ovulation. and i also took plan b. i am very positive that we didnt have protected sex on my fertile days. whats the chances of pregnancy? please help?

If you are not trying to become pregnant, having unprotected sex is not a good idea at any time. Ovulation is a tricky thing and can occur early, late or on time. There is a reason the rhythm method is not very successful. Plan B should not be used as a contraceptive measure. Best recommendation is to have a pregnancy test a week after your missed period, when it should be accurate.