pregnancy test confusion

Hi everyone! I had sex 6 days before ovulation and I am now 12 DPO. I took a test at 10 DPO and had some confusion. I took it on morning urine and the test part developed some blue color, but no line. An hour later, the test had a line with some blue color but I’m not sure if it was en evap line or what. I’m confused on why the test initially showed blue color , but not as a line. I plan to take another test the morning of 14 DPO. I have photos of both.