Unreliable clear and simple test strips ??

[Tripltemum3]

What are people experience with these ??

I’ve had 2 boxes now . The last two I used were last night ( faint line but could see it when held back ) and I tested again this morning and the line was even fainter - a real squinter that I really had to look for - other ones I took have all been negative
Af is due tomorrow .. would you expect a better line that a faint glimmer by this point in the cycle ???