Period😩

So I'm not due for my period for 10 days & I've had no pms signs so far until earlier today I wiped & shockingly I am spotting. Like wtf I've never had this happen to me & my periods are usually right on time every month. Does this happen to anyone else? Also its not the normal pink or red its more like the brownish color like when ur period is ending. No foul odor or anything. I'm just confused.