Test again in a few days as the top one the line is too thin. It needs to be the same thickness as the control line x
Try again in a few days with a red dye test they are more accurate than the blue dye tests
It said that if you take a pregnancy test and it’s positive can you take another one and it says negative then to go to the doctor to do a blood test
The top test is invalid as the vertical line hasn’t developed properly. I’d take this as one negative and one inconclusive.
I would go and followup with your doctor.