Faint line

I know Facebook is gonna ruin the pictures but I took this cheap test last night the video was also taken last night it was well with in the time frame so i decided to take a frer expecting it to be at least a strong line but theres only just a line 😒 dont know when I ovulated I have irregular periods I going off the last day I had unprotected sex which was 17 days ago with my last pregnancy I never got even a faint line till I was 25dpo the cheap test definitely has colour 😩😞