Evap lines on frer's??

Emily • My cute hubby is 25 and I am 22. We made a cute person named Thor born on June 29th!
Do frer's get evap lines?? I took two this week, thought I saw something faint but only looked at it for a minute because I have terrible vision and need glasses 😂 Anyhow, went back the day after I took them (I know, I know, theyre invalid) and saw a very pronounced line but in my experience, I've never noticed evaps with that kind?