confused??

Je
About 2 days ago I had unprotected sex and he didn't come at all it was just to see what it felt like. Today, I took a plan b one-step, and about 10 minutes after taking it we had unprotected sex again and he still did not come on purpose he just stopped. So do I need to take another plan b or should I be okay because 1.he didn't come, and 2. Because I had taken the plan b 10 minutes before? And also how long can your period be delayed by plan b?