confused...

Good morning ladies.. so I took this dollar store test last night after not feeling well yesterday and surprise surprise came back with a faint bfp. Excited to see a darker line I took another this morning and only got one line.. what's that mean. Af isn't before another couple days. I know I tested early but why one be positive without fmu and the one with fmu isn't? I'm just confused. Here's last nights test and I'll post this mornings in comments