WEIRD CIRCLE ON FIRST RESPONSE TEST

Ta

Ok girls, the first photo was taken 2 days ago at 11DPO and the 2nd photo was taken today at 13DPO it was obviously a BFN and I know the test is invalid as soon as it’s taken apart but does anyone know what that circle would be? Girls were pretty convinced that they seen a line in the top photo but I got BFN this morning with this weird test 😭😭😭

This was my tests at 11DPO ⬇️

And this was the test this morning at 13DPO that had the weird circle once pulled apart ⬇️