You said you think you are too early; how many dpo are you? When are you thinking of testing again?
I've had two heartbreaking cycles of false lines on blue dyes: blue, thick, pop up within a minute, show up in all photoshop edits/ clearly visible in person... With that brand and with CB +. I even tested one with water and one with urine, the urine one had a line and the water had nothing. So I think it's something in urine other tha hcg that causes it.