for the past 3 months, ive been on birth control (idk if this matters at all)but every month when i get my period, the blood is RED. its supposed to be red, its blood, duh.BUT this month, its not red. its brown. it came at the same time, but the flow is really lite for the first day, and its NEVER been brown before. it doesnt even look like blood. the texture is different than normal too. it doesnt feel like im wet, it feels like im slimy. but i make sure to change my pad/tampon every TWO hours just to be safe! is this "brown blood" weird or abnormal??