OPK Help!!

I posted a pic of my OPK yesterday as I thought it was close but not quite there and today my OPK was negative (I have added the pics below) I took both at midday and also didn't have any fluids for two hours before I did both - could my LH surge of happened last night? If so should I change it on glow to say that I got an LH surge yesterday? Or is this somehing else? Anybody had something similar to this? Any advice would be massively appreciated x