Is my period playing tricks on me?

Ok so any success stories or advice would be appreciated. I'm supposed to start af today. I had some spotting this morning and it totally stopped. It was very light pink only when I wiped. I keep running to the bathroom to check but this is uncomman.normally ince I spot a few min later af comes full force. She hasn't come yet. I took some tests the past few days and thought i saw faint lines but they weren't clear so i ruled them as negative.

Has anyone had this the day af is due and wound up pregnant?