Evaps???

[FunKhakiTurtle]

Hi, my first post on here!
I’ve been trying to conceive my third baby. I had my second 10 months ago after 12 years of secondary infertility. I’m 37 now and husband 44 so we are only going to try for a year due to our age. We’ve always wanted two children close in age.
I think I’m around 9-10dpo. I’ve been getting faint lines on the One Step tests. I’m not sure if they are evaps, I know they are notorious for them.
I’ve been using them for a few cycles now (same batch) and never had a line at all. I also dipped one in water to see if it produced an evap and it was completely stark white.
I also did a Tesco test this morning, it’s only 25miu though so it’s really faint and difficult to see in pictures.
Am I just driving myself insane?
Appreciate any help/eyes😊
The last two pictures are the ones which contains the top strip dipped in water.

I can really see a line! Congratulations x

You are definitely pregnant @FunKhakiTurtle - huge congratulations! x

Just nipped and got the digital and I'm actually pregnant! I cannot believe it!

Oh my godd!! Amazing, congratulations❤

Thank you so much! I'm still in shock! @LozC0411 x

Thank you so much! 😊

Thank you so much! 😊

Started reading this because I just used a Tesco test and got a very faint line. Unfortunately I can’t get my camera to focus on it so the picture is terrible but it looks like a ghost of a full thickness line with a biof concentrated dye towards the left hand edge which is the same as the control line. But it’s super faint. Super, super hold-up-to-the lightbulb faint (the picture makes it look even fainter as well)
I have done a bajillion tests in my life, not least over the years ttc my daughter, and I have never once had an evaporation line. So I’m confused. Is the verdict therefore that the Tesco tests don’t do evap lines?