So i had a D&C 8/8 due to a missed miscarriage. They checked my levels 8/19 and my levels were 532. They thought that was still a little high so they did a repeat ultrasound and checked my levels again on 8/25. The ultrasound was clear just showing fluid which they said was normal. My hcg levels dropped to 91. So with my levels dropping so drastically so quick i thought i would test today and it should show not pregnant on a digital. Well i got a positive on a digital and i opened it and the line is not faint at all. Whats the chances that my hcg levels are dropping slower than expected. Between 8/19-8/25 it dropped 341 mIU/mL in 6 days so another 6 days 91 should be zero which is today. Idk if im just freaking out.

The dr told me after 2 weeks i was ok to have sex. With hcg in my system i thought i couldn't get pregnant again. So im wondering if this is old hcg or new hcg. I am having some cramping again in my lower abdomen. Im just scared it's new hcg.

Anyone experience this? TIA

Pic of the inside of digital taken tonight