Is this it!? Faint line on FRER negative digital??

Kasey • Fri, May 12

Got this today, middle of the day. Pretty sure I see a second line. Came up in one minute. Tested with a CB digital and said not pregnant. Is the FRER a bad test or does the digital require more HCG? AF due today to Monday. I'm 14 dpo. Thanks for advice!!!