Is this a positive ???

Hey all you lovely mummy's ! I need to ask for your opinion? I have been trying for baby number 2 for a very long time now, is this what I think it is? If I am pregnant I'll be due on the 29th August ! And I'll be 4 weeks, I have taken the same test for a week now and some still say negitive, I took one today and it was negitive but I looked at this one from a couple of days ago and if I'm seeing correct is that a positive ? Can this be !? Or maybe a dodgy test?  Thanks xx