Am i pregnant

I might not be but I've taken four of these and each came out darker each day.. Then I took two pink dye ones and they came up faint again

I went to the obygn doctor and it came up faint again but im bleeding. And its not light but its not heavy its medium flow and just plain brown with a little reddish orange. And my obygn doing know if I am or not she's confused too.

Has this ever happened to anybody else??