Will I get pregnant if I took a Plan B 40 minutes after a condom broke and during my ovulation?

The only emergency pill proven can prevent pregnancy during the 24 hours around ovulation, itself, is Ella (Ulipristal Acetate). Even that pill is not guaranteed to work, though.

Unfortunately, it is not advisable to take that pill if you have already used Plan B, as it's thought the two taken together could cancel each other out, leaving you with no chance of either pill working. More research is required.

Plan B might work, but it has never been proven.

Your only other option, now, is to have a Paragard IUD fitted, by a doctor, within 5 days of the sex. That may stop a pregnancy implanting, if the Plan B pill, fails.