I’m on my period (but I have 1 day left) and I’ve noticed this very strong foul smell. I don’t really have any fresh blood coming out anymore so I don’t think it’s my period (I’ve never smelt this kind of smell on my period). I know period blood smells like pennies and this smell is NASTY. Since I’m on my period I can’t tell if the brown stuff coming out of me is old blood or brown discharge since I have 1 day left in my period. I’m going to call the doctor once my period is over to get tested