Faint lines, positive digital.

So I took a test Friday, negative (top test), the middle is from Monday and the bottom is from today. I’ve tested a BUNCH, the cheap tests you can’t really tell a difference they are all just faint, but I think on the first response they are getting darker, just very slowly. I did take a digital this morning and it read pregnant. Can I celebrate or still be cautious that the lines aren’t getting darker faster? Thank you!!

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Edit*

I think I’m having a chemical, just took a frrr and a frd both negative.

Thanks everyone