Long story

I keep making these post cause I am soooo confused.. had my loss Jan 2, stopped bleeding Jan 14. Got my first hcg levels back Jan 27 and came back at a 5 , went back Thursday Jan 30 and came back at a 4. Took a test Thursday and got this

Took a test today and got this

I’m confused and idk what’s going on! How can a hcg levels of 4 do that to a test???? I would think It would be atleast a faint line not a dark line like that! I have a appointment this Thursday coming up to figure out if this is a new pregnancy or what’s going on... what do you ladies think?