I’m scared (please help)

So my boyfriend and I had sex on a Saturday.... we were a condom and the condom broke, but he didn’t cum.... but I also don’t know if he had any pre-cum, so he bought me a Plan B JUST in case he did....🙄😐 I took like 3 to 4 hours after failed unprotected sex... 🤷🏻‍♀️ I’ve read somewhere where your supposed to experience Bleeding, dizziness and cramps, which I’ve experienced the cramp like feelings🤷🏻‍♀️ and the dizziness but I haven’t had any bleeding and it is now Tuesday... why is that?

I’m so disappointed in myself... && I’m only 16.