Would you say it's getting darker?

So I had a miscarriage July 30th, it was natural, I lost a lot of blood and basically went through a labor like experience . I kept having "contractions" and finally one big one and the baby came out, as the placenta 2 mins after . I bled for a week after and passed a few clots. I took a test 2 weeks (15 days) after the miscarriage and got this positive . Didn't wanna get my hopes bc I figured it was left over hcg . I decided to take one again today 8/19 . (20 days after) . Is it getting darker?