What is spotting classed as? Four days late

K

I’m four days late coming up to five. I’m having on and off spotting for two days now but no blood like a papers worth or anything which you normally get when you get the aunt flo. Is spotting classed as a period or is only full blown blood classed as a period? Getting spotting like this on and off. Nothing is going on my pad I’ve put on either. Just when I wipe

Someone help please??