Hello,
I had a condom failure on April 10 and took Plan B the next morning (there was no ejaculation, but I get worried and took Plan B just in case). On April 18, I received my period as normal (phew!). I have not had sex of any kind since April 10. I was due for my next period on May 15, but haven't gotten it as of May 21. I took a HPT today and it was negative. My periods are always regular and this is the first time I've ever been late, so I'm freaking out. Is it likely that I'm pregnant? Is it possible for a HPT to show a negative result this long after what would be implementation? Or is this Plan B affecting my cycle?