Spotting everyday but no AF?

I'm at currently on cd53 and my usual cycle length is 27-32. This cycle has been really confusing as I thought I was due AF around Cd28 because I had broken out in spots and had period like pains not AF was a no show.

So a week ago I started spotting but it was only the one time when I wiped and then nothing for the rest of the day this has happened for the whole week Expect a day in the middle. I'm so confused as I have looked at so many different websites/forums and not found anything to compare or to explain what's going on, I don't know wether to phone doctors tomoro.

I have no pain what so ever and the spotting is light like what I normally have at start of a period, light pink/slight red.

If anyone can shed some light or has had similar it would be so great full!

I took a hpt at cd31 and was negative.

Been ttc for 3 years