HELP positive or negative?

Wondering if some of you wonderful ladies could help me. I am late by 4 days, AF is still yet to appear..I have just done a test and this is it.. 
In person there is a really faint line, both me & my SO can see it..just wondering you opinions on it before we get over excited. 
If someone could tweak it I would really appreciate it along with the help of your eyes..
Thank you :) xxx