devastating

Why do I think I still see something? I got a positive test yesterday...but someone commented saying it was invalid. I took a new test today (and though pretty sure I peed too much on it by mistake) with fmu and to my avail it was negative-or was it? I still FEEL like I saw something my camera wasn't picking up. I feel like there is an ever so faint line that was there. Is it there? I am so knocked down. I am 11 - 12 dpo. I'll post pictures of the tests...the first two will be yesterday's. tell me if you see anything on today's...please...I'm so lost and confused...I'm hurting...