Confused- help

So I usually have a regular cycle of 28 - 30 days generally 28.

I am NEVER early!

This month I had so many symptoms I would have bet my life that I was pregnant. 5 days before af due I started spotting ( never had this ) and then I started bleeding 2 days before af.

The bleeding lasted for two days, ( usually 5 days or 6 ) this morning I had brown cm and now pink tinged cm.

Should I go to the doctor as this isn't normal.

Obviously I'm not pregnant as I assume this was a period - flow

Of bleeding was consistent with af