?! I keep seeing a faint line only!

Anna • Married since 09/09. We have a beautiful son, born on 2/11/13 at 36 wks 3 days. Ttc#2 since June 2014. CP 10/19/14 :`(.
So I've been testing for a few days now. The past three days (and today) I've gotten faint lines that've only been faint. I know-- a line is a line, but it hasn't gotten any darker. AF was due Friday, my lower back is very achy, very forgetful, mood swings/emotional, pink cm on Friday too. My hubby says he sees nothing on the tests. 
This is driving my batty.

Vote below to see results!