Condom broke

My boyfriend condom broke Saturday April 14, 2018. The next day in the morning he went to CVD to get A Plan B Pill. I took it right away. It’s saids the quick to take it then the more better it’s works .. it’s takes 3 or 5 days. It been 4 days since then. I don’t feel anything just to make sure I am not pregnant. He was freaking out. We’re both 18, one more month out of high school. Our parents don’t know anything and I am not on birth pills.. don’t feel comfortable using through but we’re very careful. But he freaked out but there could be a chance that his stuff didn’t get in me bc he said it was on the side of the condom and we did it first and both happen then we did it sec time but idk if it’s was during that sec time or it was like that when he took it out after. Then he felt something and he thinks it’s broke so he went to the bathroom to check so I just took the pill just in case. So nothing is happens so idk if that’s a good thing or should I wait for my period to come next month in May or should I take a test?? If so a test, when? Let me know what to do.. I think I’m fine but what you girls think???