Plan b and ovulation?

Im freaking out! I had sex Monday night ( nov 16) but something odd happened and according to the app i was ovulating😭

So my bf finished inside but for some reason the condom slid down a bit but i immediately grabbed it so it wouldn’t completely fall off it was middway down but still wasn’t completely inside of me the weird thing is that i had his Cum all over the front part of my “vag” ( well at least i though it was) but not sure if it went inside because i went to the rr right after and nothing came out 🥺 i took plan b maybe about 15 hours later, anyone been through a similar situation? 💔😭😭😭