Can someone ease my mind??

12/16- FMU

We had sex and I started bleeding. It was very light at first. Then, in the afternoon got very heavy. I took a digital and it said not pregnant.

12/17 it was super heavy all day.

12/18 was normal period flow.

12/19- Ava bracelet stats still haven’t dropped temp and breathing rate. Boobs are still tender and my sense of smell is super human. I took these mid morning- and grabbed my old ones out of the trash.

Is it possible I’m still pregnant?