Strong Positive after Miscarriage ?

Sheree • TTC #1 🙏🏾🌺✨ Miscarriage on 6-22-22

So I initially assumed I had a miscarriage on June 19th because I started bleeding and passing clots. And I’ve been bleeding since then and it’s gradually gotten lighter. So I took a test too see if my lines had went away and this test today is super darker than any of the other test I took on May 30th….how long do you test positive after a miscarriage and do

the lines get lighter?????