I dont understand

I got 3 faint positive pregnancy tests on dec. 8th. And ive gotten negatives since.

My period was due on the 13th, and it didnt come. I had minimal bright red bleeding yesterday morning during a gallbladder attack, but today im having nothing. Very very minimal spotting.

Whats going on? Ive had a chemical pregnancy in the past and it came with cramps & heavier bleeding...so why am I not bleeding, not cramping, and still showing negative tests? Do I count yesterday morning as CD1? What do i do?

I do plan on going to the doctors at the end of the week if I still haven't gotten a normal period..