I had gotten my period on 2/10/15, it ended on 2/14/15. I got my period prematurely due to the fact that I took a Plan B, because the condom broke during sex. I took the Plan B on 2/7/14. Got my implant placed in on 2/23/15, two days ago. So technically I got the implant 9 days after my period ended. I had unprotected sex with my boyfriend today, 2/24/15, and he ejaculated in me. I weigh about 109lbs if that helps. Am I safe, or should I get a Plan B because Im a little worried.