Very very faint positive

hi everyone. 
so I’m one day late and I took a test this morning. At first I thought it was negative but then after the 100th time looking at it I could actually see a really faint line. The camera wouldn’t pick it up though unless I messed with all the colour settings. Am I going crazy or can anyone else see it? Also what does it mean for it to be so so faint? 

Thanks guys xx