One negative/One positive...same urine?

[brandi91]

I took a CB digital OPK and a IC one. The IC started as faint but quickly became what I would consider positive (in about 10 minutes). The CB was negative (a blank smiley-I used the ones with blank, flashing, and solid).

Thoughts???

https://i45.photobucket.com/albums/f97/BornToRide14/IMG_20160221_145220.jpg