I have a brown smelly discharge from my vagina a week after my period. My period lasted for a week and now it s brown and smelly. My period is really irregular, my last one started 6 weeks before this one started. I m 17, I ve never had sex and I m not on the pill or anything. Is it an infection? It s really smelly and bothering me, I can smell it through my jeans if I m not using tampons and my dog keeps sniffing it.