Took Plan B, now over a week late

Jessica

I had unprotected sex about a week before I was projected to ovulate. At my doctors appointment about two days later they gave me Plan B just to be sure. After the five days I was allowed to start taking my regular birth control and now I’m a week late. I called Planned Parenthood and I’m waiting to hear back from someone but I’m still freaking out. He did withdraw before ejaculation, but I know that means nothing.

Am I overreacting?