plan B

Soooo me and my boyfriend were having sex this morning and the condom broke. He came inside of me because we were both unaware. Afterwards we realized it but had to go to school, about six hours later me and him went and bought the plan b one step. I'm freaking out. I took it as soon as I got it and he feels mad, at himself mostly. He felt something different but decided to just trust the condom. I'm not mad, just more in shock. It's been about 5 hours since I took the pill and I have weird cramps and a constant headache, not too many side effects yet. I hope it works. Both me and him are certainly not ready for kids.