Stumped 🤨

Had a positive test 5/30, started bleeding w small clots 6/3, but was done by 6/5. No more sore breasts, but still fatigued, super hungry, low back pain and peeing like every 30mins-1hr. I figured I had a miscarriage, but have never had one previously. I took a test today figuring it would be light or negative but it’s actually darker than the original test. How long after a miscarriage would you still get positive hpts? Is it strange this one is particularly dark even with diluted urine? I’m going to get blood work done tomorrow!