Chemical or period? SEE PICS

My period started very light and only noticeable when I would wipe... I went from light brown for 3days, then on the third day turned pink, the next day it was red and the next day I had what I believed to be a full blown period BUT I only had bleeding for 1.5days and then it was suupppeeerrr light, wasn’t filling up any tampons. I took pregnancy tests the whole time. The line got darker with each test but my digitala said no. I downloaded the app to check and it said I was pregnant based on my first response tests. I continued to take tests and once my period was “done” my line that was there faded away.

My last test had only like half a line pop up. I’ve never had a period this light or a test have half a line....... Do you think it was a chemical miscarriage or just a weird period??