Digital lines

Amber • 23-Married. Currently Pregnant after 11 months TTC. MC May 2015
Alright so I've gotten 3 positives over the past few days.., I just wanted to see yes+ on a test instead of lines. I take a FRER digital and it wouldn't show results (yes I followed the instructions). So I looked up this issue and apparently it's common, along with false negatives. Everyone said to remove the actual strip from inside. Obviously this isn't the best idea but I figured why not, I had 2 dark lines. Like I said, I've had multiple positives I'm just wondering how reliable those lines in the digital are from expierence