New FRER showing ghost lines?

Jean • 👼 May 2015 (Ectopic 6 weeks), 🌈 👶 April 2017, 👼 June 2018 (MC 7 weeks), 👼 November 2018 (Chemical), 💕 Expecting #2 September 2019
I keep getting a ghost faint positive in the new frer tests right at 3 minutes and then it goes away - this has happened for 3 days now! I just took a blue dye test and see a faint line. Does anyone else see it?