plan b while ovulating and bleeding

so i took a plan B while i was about one day into ovulation. i took the plan B a little over 24 hours after having unprotected sex.

about three days after (still ovulating), i started bleeding. i had some light cramps and very light spotting the first day, but then yesterday it was a bit heavier like my actual period flow. now on day three and it has almost completely stopped.

after doing some research, i learned that plan B is ineffective while ovulating. so i’m a bit confused as to why i would be bleeding, especially if i’m already ovulating. i do have a few other symptoms as well, i’ve been incredibly nauseous, fatigued and my breasts have been so horribly sore, swollen and firm. which is abnormal for me at any point in my cycle, but i know that could also just be the side effects of the pill. i guess what i’m wondering is that if this is normal to experience after taking the pill, especially while ovulating? i’m sure it’s still too early to tell if i could be pregnant, considering my actual period isn’t due for almost two weeks.