Help 😩

I’m so confused. Period is due Friday but got my BFP yesterday and took another today (11DPO) and it was even darker. Also took a digital that said pregnant.

Had some very light pink/brownish discharge when I wiped.

Then had a smalllll dark clot.

Have had some light cramping since.

For those of you who have had a chemical, how quickly did your BFP turn to BFN?

Like if this is a chemical pregnancy, will my lines start fading on the tests asap? How quickly do levels drop?