I am 23 days late for my period(just skipped november) now I have been spotting for 5 days its been light not heavy enough to need a pad and its been brown no red. Some other symptoms I have is I'm hungry constantly if I don't eat every 2 hours or so I get extremely nauseous. I've also been very tired lately and have really bad heart burn. I don't believe I'm pregnant though because I took a test about a week or so ago and it was negative. I've never missed a period before. So I was just wondering what might be wrong?