Broken Condom 🙃

So yesterday, me and my boyfriend were having sex as usual with a condom. It wasn’t until he finished and pulled out that we both notice the condom was broken through and he came in me. I literally ran to the nearest Walgreens and bought a Plan B pill and took it right away. I don’t know what to do after if this pill doesn’t work cause I’ve never taken it. All the instructions were was to take it as soon as possible and I took it the same day. I get my period in 10 days approximately and I have a gyno appointment on Tuesday. What should I do 🙃 please I need help...