Help!!

I found out I was pregnant on Friday. Had bloodwork to confirm. My levels were really low, but i didn’t even pass the day my period was supposed to start, which was Sunday. I’ve been testing every other day to see line progression. Sunday’s line was pretty dark. Tested again this morning. And the line is lighter. No bleeding. Supposed to go in tomorrow for a second blood drawl. I’m so scared I’m having a chemical. I also took a digital and it registered as pregnant.

Top is Sunday. Bottom is this morning.