Help?

My period "came" the 27 but it was just a ugly brown instead of a dark red like usual. Everyone knows how the second day of periods suck well mine was just a little pinkish red nothing to heavy just had to wear a panty liner, the next day was nothing unless I wiped but nothing more. Today I'm having that brownish discharge again but nothing much only when I wipe. I tested last night but I don't think I done it right my bff told me if pregnant it most likely won't show Gil next month. Any help?