Ok i tested at 10po (well the equivalent as I had IVF) with a First Response. Unless I looked very very very carefully in bright light it looked blank but there was the faintest grey line.
Does that mean anything. It wasn't an evaporation line as it was less than 10 mins.
With ds I first tested at 11days and I think the line was very very faint that day but slightly pink and a bit darker than this one was.
I don't think I can wait 2 days to do another.
I wonder if it is really a negative as First Response would have showed up something??