I am 5 days late for my period and experiencing light spotting what could be the issue ?

Light spotting ?'s: Light spotting with a "late period" may just be a delayed ovulation, which will also delay the onset of a period. Check for pregnancy with a serum HCG test to be certain. If the test is negative, ask your gyn physician about low dose oral contraceptives, and menstrual cycles begin to be unpredictable at one's mid thirties.