FRER - faint line day of testing morning after looks pink?

Hi, Just looking everyone’s opinion? I did the top test at the start of the week and I did the bottom one yesterday. The top one has nothing in it but yesterday’s test had a faint line in it - I was thinking maybe it was evaporation line? But when I looked this morning it is definitely pink! I’ve used the clear blue digital and it said not pregnant. Has anyone else had this? I was thinking about going to the shops once they open and getting another FRER to check against? What do you all think? Xxx