Like progression or remaining hormones?

Trying to make a this short and simple. I miscarried twins at around 9/10 weeks on January 29th. Took a home pregnancy test on February 17th and it was negative. Had a 3 day headache and felt off so I retested on February 19th and tested a faint positive. Have been testing daily since. I was originally using blue line dyes and was advices to switch to pink. These are my line progression/tests. Do these seem like they are progressing and is a new pregnancy so quickly or are these normal for after a miscarriage? I’m being told that if the line is progressing that it’s a new pregnancy and I’m also being told that this is likely left over hormones even after I had previously tested negative on the 17th. I’d the app is correct and my cycle is on track, I’d be 13 days past ovulation and due for my period tomorrow.

Opinions and personal experiences please!