Weak LH surge?

Hey guys I know that the test is not considered positive unless it is just as dark or darker than the control line but I was just wondering if anyone has ever had a random dark test that wasn’t quite positive followed by weaker tests after that. I had morning and afternoon dark-ish positives but not quite blazing positives on cycle day 12. This picture was taken three days later so it doesn’t show up that dark in the picture. Anyways, could this have been the surge?