help, I don't know what's wrong

Hi, so today I woke up feeling normal. Until after a morning pee I went to wipe and saw a light brownish blood? Coming from my vagina. It's been about 2 1/2 weeks since my period ended and me and my bf have protected sex and he never cums inside me he likes to pull out to be extra safe. Throughout the day I felt like I was spotting and when I checked my panties the color was a dark brown?? I'm not sure what it is! And I promise that came from my vagina and not any other hole!! Lol