My period is MIA...is this an Evan line? Very THIN

Shell • Had our Rainbow Baby boy in Dec 2017 💙 and now trying for baby #2❤👶🏻🤗❤️

Not sure if it’s an Evap line...no period in sight? 3 days no but I ovulate late so wonder if I need to wait a few days to take again? Is a thin line (not just faint but THIN) the evap line? Zoom in, TIA!