Little help here feeling confused!!.

Mavelyn • Expecting baby #2. I have a little girl( Ariannah) who is 1.
So I ovulated on the September 29-30 as confirmed by my opk's. Problem is I continued to use the opk's to see the levels decrease and today I had a positive opk after days of negative ones. I'm feeling confused now. My period is supposed to start in three days!!. Any advise my pretties?.