Please help-Two different ovulation test result

Hi everyone

Please help, I’m pretty new to the opk world and I’m soo confused

I am currently on CD 15 and I started testing yesterday at CD14.

I generally ovulate between CD15-CD18

I took the clear blue advanced digital with the first morning urine and it came back a blank circle (which I know it does for the first test)

I made the mistake at looking at the strip part and both lines were the same darkness- I know generally your not suppose to look at it but I did

So I thought just for curiosity I’d go get the test strips (first response) I went and got the first response and used the same urine and it was a nearly positive result… I thought that’s strange but I’ll test in the afternoon and see what happens

So I tested and it was positive!! So I did the clear blue one and still blank smily face. I thought ok I’ll test the next morning and see.

First response- The line was starting to get lighter than the control line which I thought must indicate that the my LH surge maybe going.

The clear blue digital- Still no smily face

I’m so confused, which test do I take as the correct result? We still BD of course just in case.

Would my LH surge be so short that the digital missed it? But wouldn’t the smily face start flashing though (as high fertility because wouldn’t my estrogen be rising after my serge , so why wouldn’t it pick up on that?

Could the first response be wrong?

Any advise would help and put my mind at ease

The bottom pic was the clear blue AM on the 13th