Possitive on CD25?!

J
Hi everyone,
This has been my first month of OPK testing, I used clearblue from CD9 then today I usedmy first cheapy test (clearblue is so expensive). With clearblue I had no possitive days, but today on CD25 I had this result.....
My periods are pretty irregular, when I was younger they were all over the place but have recently had a couple of 28/30 days cycles, but a 51 day cycles last month. 
Please let me know if you think this a possitive or even near a possitive?
Thanks guys
 XX