Okay, this is weird?

Okay, so my period finished a few days ago, and it was the lightest I've ever had it be, like seriously. Almost none existent . I didn't have any pms symptoms before or during, and it was just a day late. Anyways, I went to the bathroom an hour ago because it felt as if I had started my period again, and there was dark, brownish blood. Enough to where I had to wipe twice to make sure it was all gone. I went to the bathroom to check just a few minutes ago and it's as if nothing ever happened . I have no pain , no sore boobs, just nauseous and super hungry