annoyed. cycle day 37 no period.

Ra
Almost a week late for my period which is always on time like clock work. So I bought a cheapie pregnancy test yesterday and it was negative. I've been nauseous on and off and really tired, also my emotions are all over the place I seem like a big cry baby 😂🙄 this ever happen to anyone and still get a bfp at some point? -trying not to loose hope!