Indent or positive test?

TT

I’m 8-10 dpo and I took this test at midnight and when I took it, I noticed a line a few minutes after I took it. I’m looking at it again in the morning and I can see it a little better..don’t know if it’s an indent or not. I took one yesterday at 3 pm and it had the same line. You can see it in person really clearly. Af due on the 15th