Thin positive line

Amber

So my period is due in 6 days (13th Aug) I bought a early detect pregnancy test kit today. Originally I was going to wait until tomorrow morning to do it but I have two tests in the kit and read in the instructions you can test on any wee of the day so impatiently I have just done a test and got this result....

I can see a clear line but it is so thin and quite far away from the control line so I’m not sure whether to call this one invalid. Opinions please!! I think I might just be in denial!!!