So this has been a big problem for me the last couple of weeks. Let me give you the background... last month my boyfriend and I had a broken condom incident, we didn't want to take any chances, so I took Plan B. It worked, I got my period a little late, but it came. I'm still waiting for my period this month and while I can't think of a reason I would be pregnant, it was the first thing that came to mind when I was late. I took a pregnancy test a few days ago (when I was already a week late) and it came up negative. I've heard that Plan B can mess up your cycle for a while after you take it. Does anyone have any experience with this? Should I take another pregnancy test? See a doctor? Any advice would be greatly appreciated. Thanks!