In the left window if it is negative you will see | (just a single line) and the same in the right window.
However if it is positive you will get a in the first and a | in the second.
(if you look closely at the pic it even has the diagrams in it to show you)
the vertical line in the "test" (left) window is a "control line"
while the horizontal line is there but faint and i'd have to say it looks like an early positive.
Clear blue is best if you wait until your period would be due if you're going to test this early you need something like first response.
But even so it does look like a positive