I did one yesterday (day31) and thought it was negative
After I had looked at teh results as I did a test on sunday whihc was also negative, I put it in my bag, as I was away with friends at a health Spa, anyway this morning when unpacking I could see a really, really and I mean really faint outline of a dot, no colour but something is there.
As I say I did the test first thing yesterday morning, so after seeing this mark today I went out got another test and it was def a negative.
I wonder if the mark came from it being in my bag as it wasnt lying flat, I just chucked it into my bag when packing??
So not sure what to think..might try again first thing in the morning ??