Am I seeing things?

Kimberlea • Married in December 2013. We have 2 sons, ages 5 & 1. I also have 2 step kids ages 10 & 9.

I'm 7 days late for AF. I just took this clearblue digital test a few moments ago and got a "not pregnant" reading. Someone gave me the idea to pop the test open to see the test strip inside and this is what the strip looked like. I see a faint blue line next to the dark one.

Does anyone else see the line? Should I test in the AM with FMU?