Is this VALID?!

Jo

So about a week ago I tested very early and found a very very very faint line. The rest of the week I had no line at all. I was sure I had a chemical pregnancy. Then this morning I tested (my period is due tomorrow) and I got another faint line! But I noticed it’s darker on the top than the bottom. Is this still a valid test? Is it defective? Is this a positive?!

(If I edit the picture to be right side up it makes it look tiny, sorry)