Spacing in ovulation positives?

Crystal

So I’m having a hard time seeing when I started ovulating. On CD8 I had what seemed to be positive, I posted it and when it was fresh the lines looked the same and I had people agree. My results went back negative on CD9 & CD10. Now on CD11-13 the test lines have gotten so dark they are purple. Does anyone have any info as to what’s going on with the spacing?

Is this normal?