Faint line problems 🤔

I thought I could see a vfl this morning and other people said they could too. Ive looked back at the test which I know is now invalid but I feel I can see the line a bit more even though it's dried out. Usually when I pick my tests back up I can't see anything so do you think this is the start of a line? Or does it look more like an indent? If you've had any faint lines turn into positives I would love to hear about it!

This morning (1) and now (2)