How is this even possible 😡

Stacey • One boy, one girl, Two in Heaven and another on the way. Endo Warrior, Bicornuate Uterus

So I got a faint line for a few days then started bleeding. I thought nothing of it, thought it was probably lines eyes. Yesterday, got a CLEAR positive with FMU but I was bleeding so I rushed to the clinic and they told me it was more then likely an early loss, so they sent me for blood work. My HCG came back at a 3 which is nothing according to the docs. So later that night for shits and giggles, I took another test and got another faint line as it was not FMU. If my hcg is at 3, how am I even seeing lines, especially ones that dark. Even though I know it’s a loss I am still beyond confused

FMU test

PM test