Line seems to be disappearing :( was it all in my head!

Heba

So I ovulated on the 20th of December and AF expected to show on January 3rd. so officially, period is late. I took a tests 3 days before AF and BFN. Took another a day before AF and posted it on here a few ladies said they saw a very faint line. I then took another test the day of and it was still very faint. This morning I thought if im pregnant then it must get darker but i think its not, my husband thinks its a BFN.

what do you ladies think? was it just an evap to begin with. here are all the photos of all tests.