Evap or line ??

I need help..!! We TTC for 3years and I had this weird period a few days ago started on 2/27 was spotting.... 2/28 looks a regular period and on 3/1 stops then 3/2 spotting dark like chocolate then stops.. .. my regular period do last 5-6 days and I start experiencing headaches and nausea after that.. I took. pregnancy test and a got that line int the 10 minutes window....I tried a pink dye before this one and it's was a faint line so I thought to try the blue one...I never got a line like this before in 3 years

Next morning completely dry 👆