Positive at 10 DPO Then Brown Spotting at 12 DPO

TW- potential CP

I had a Complete Molar Pregnancy and D&C in August. Was cleared to try again and had a positive test at 10 DPO which got darker 11 and 12 DPO morning. Have been cramping on and off. Then this evening, 12 DPO, felt some cramping and there was brown when I wiped. Doctor’s office is closed for the holidays until January 6. Period would have been expected tomorrow and normally this how my period starts off- light brown and progresses to full-blown period by one day later. Should I be preparing for the worse?