HI and thanks for using the forum.
Plan B can mess with your cycle a little. Generally, you would expect to get your period when you are due for it or within 7 days of your expected time after taking Plan B. If you are more than 7 days late for your period, you could be pregnant. You would need to take a pregnancy test to find out. I hope this helps. Good luck.
Bridget
You are probably right. With the negative test, you are most likely not pregnant. You can do a test weekly until you either get your period or you get a positive test. Good luck.
Bridget
Thank you for your response. I took two pregnacny test, one last week Wed & Sun. Both results came back negative. So Im hoping there is a delay in my period.