Pink evap on FRER?

So, two days ago I took a FRER. Thought I saw the faintest line but put it down do being the indent mark and left it in the bathroom. I went out, came home a few hours later and there's a faint pink line. Evap. Took another this morning - same thing. Indent. Look at it a few hours later and there's another faint (but darker than Saturdays) line. Obviously I know I can't take this as "woohoo I'm 100% pregnant" - I know you shouldn't read them after the time frame but I always thought evaps were grey? I did read somewhere that a positive can come up after the time frame if you're really early due to the hcg needing more time to react but not sure that's true🤣 all I can do is wait a few days and test again but has anything similar happened to anyone and you ended up being pregnant? 🤰