Slow line progression.. PLS HELP 😢

So I took these this morning with fmu and they haven’t seem to progress/get darker .. but they also aren’t any lighter. Last test I took was 3/1 and today is 3/3 . Had some brown rusty spotting that only shows a little on a liner and sometimes when I wipe only and it’s no longer showing. No cramps or anything . Just sore boobs and fatigue and headaches .

Please give me reassurance and hope that this could be normal and it will be okay!! 😩 anyone had slow line progression and it went perfectly okay? Had an ectopic last year so this would be my rainbow...😞

Top 3 are older tests from 2/28 and 3/1. Bottom is now fmu 3/3