The nitty gritty: been with my boyfriend for six years. We've never had any other sexual partners. We use condoms--never had one break or any reason to believe I might get pregnant. My periods are pretty regular and it's usually 27-30 days between the end of one and the start of the other. For the past few months it's been the 16th of the month every time.
I took two pregnancy tests, one yesterday (late morning) and one today (when I woke up) and they were both negative.
I'm sort of freaking out because I don't really know what's going on. I exercise a lot, I eat healthy, and I'm under some stress but nothing major that would affect it. Really nothing's changed in my life recently that would affect me (or so I believe) ... what should I do? I've never had a period be more than 3 days late so I'm starting to get really, really anxious. :\