What’s happening??

So I tested 3 days ago and got a negative ( was about 16 days late ) I decided to test day after and I kinda got a line ( propper exited at this point ) so I tested again same day and same thing got a line kind of , I did another test today with same brand but different stick and it was negative ??

Best picture I have of these but you can see the line on the last two

I know invalid cause it’s open , but iv said this loads of times it’s a cheapie and the screen was all scratched and I couldn’t see a thing 😂but as you can see no second pine , could it be because if the dye run , I will also add I didn’t pee in this stick for 10 seconds like it recomended me to , so could it be a false negative ? I am going to test again today after work , but I just wanna settle my disappointment before I start aha