Spotting..

Ge

So I had cramps this afternoon and my back was aching.. I went to the bathroom and I was starting to spot.. so I thought ok af is starting in my predicted day.. CD 27.

However at 9.00pm I have no cramps back ache is gone and I still only had the very lightest of spotting... it hasn’t even got to the point where it shows on the tp.

Bbs are still tender...

Is this a weird start to my af or something else???