af one day late and BFN :(

I went to the OBGYN for my annual and I mentioned that I was a day late so they gave me a test and it was negative. It was my first time seeing this doctor and she also told me that now that I'm at the 6 month mark of active trying that I am technically considered "infertile." This is so heartbreaking. She just told me to try to stop thinking about it but is that possible?! Has anyone had been able to stop thinking about it?! Also, WHERE is af and WHY is she doing this to me?!? The doctor assured me that the test could not be a false negative because their tests are so strong 😞