faint lines and negative frer

Emily
Hello!  I have gotten 2 faint lines in blue eyes. 1 was equate early response and the other was dollar store brand early response. This morning I got a negative with a frer, I thought I seen something at first but then it went away. What do u guys think?  Likely am I too get 2 false positives within 5 minutes on 2 seperate tests. Thanks!!