Help!

So my normal period was suppose to start October 4th, I kept feeling as it was going to. But instead it was light spotting for a little while and then stopped. And the following day it had done the same but with some cramping, then followed by that night it started getting slightly heavier but nothing near my normal period! And I am a women with a regular period always, i have never had spotting in the beginning of my period that's always at the end of it. We are trying to get pregnant. I took a pregnancy test this morning but it was negative. Is it too early or is this just not baby Time and a odd period???