Chemical pregnancy?

Amber • Just Living life with my honey :)
So if some of you ladies may have seen a few days ago I posted a picture asking about a faint postive pregnancy test, I took the test in the morning and there was a very faint line picture below then that night I took a nother one it came back negative then I got my period the next day very very heavy in the morning.. I was so disappointed I just don't know why I would get a faint line then nothing then my period full on like that? Then I looked up about chemical pregnancy could I have possibly had that? I had preg symptoms to that I don't usualy get around AF time I thought for sure it was my month then she came. Has this happened to anyone else?? Please let me know