Positive pregnancy test, now dark brown discharge

Erika • Baby #2 due Oct 2023

I’ve had multiple positive pregnancy tests over the past 2 days that are continually getting darker but today (when my period was actually due) I began having a small amount of brown discharge just when I wipe and had one small dark red blood clot. I don’t know what to think? I have some slight cramping but not as bad as period cramps. Anyone experience this before?