Confused. Trying to concieve. Ovulation

wed oct 23

Thur oct 24

fri oct 25

my ovulation test said (no)

On Saturday oct 26 my ovulation test said yes.... ( I had unprotected sex) only this day

Sunday oct 27 my ovulation said no again

When did I ovulate I have a 31 day cycle...

What are my chances? Also I only seen clear cm on Sunday October 27 the day my ovulation test said no.... HELLLLP