spotting for 10 days

Amy Jo
Ok so my lmp was sept. 23 I have normal 30 day cycles. I don't know when I ovulated.
On cd21 I started spotting pink/brown
The spotting is only enough for panty liner, though at time only there when I wipe.
The spotting is still going on now which is cd33 so I have been spotting off and on since cd21 it's been 12 days now 
Af was due on Saturday October.22, still only the spotting
I was trying to wait until spotting stopped to test. 
What do y'all ladies think