If ovulating, will plan b still work?

Yes: Plan b will still work even if it is taken at the time of ovulation. Remember Plan B is most effective the sooner it is taken to the time of sex. Effectiveness goes down after 72 hours.

Plan B can be: used at any time during a woman's menstrual cycle. Plan B One-Step is up to 89 % effective when taken within 72 hours (3 days) after unprotected sex. It can reduce chance of pregnancy by up to 95% if used within 24 hours. It continues to reduce the risk of pregnancy up to 120 hours (5 days) after unprotected sex, but is less effective as time passes.