The condom broke but I already ovulated what should I do?

Me and my boyfriend were having sex with a condom and after we finished he realized it was broken. My Flo app says I already ovulated and I feel like I did. Last week I had all the symptoms I usually get when I ovulate like high sex drive, cramping, and heavy discharge. I heard that plan B only works before you ovulate so it would be a waste of money buying it and it also makes me feel sick. Please let me know what I should do.