Hellppp

Okay so I am currently 11dpt and 9 or 10 dpo... I feel like this is due to maybe a small amount of hcg still being in my system from the shot but I don’t know I’ve been testing it out and the line has been getting lighter but these are super cheap tests and I would think they would have stopped picking it up by now but does anyone else see the line or am I just losing it?