darker line 5 days after heavy bleeding?

Danica

The top test is from Wednesday. I started heavy bleeding with clots on Thursday and figured it was a miscarriage, it lasted that night and then slowed down and stopped after 3 days. I read that for a super early pregnancy (I was roughly 4 weeks) the levels would go down a lot within 7 days.

It’s been 5 days so I took a test to see if it was just as faint or gone, but now it’s darker.