I am going to assume based on the information provided that you are not sexually active. If you are experiencing black/brown discharge accompanied with bad smell, it can indicate vaginal infections. Smelly discharge usually indicates a problem in reproductive system of a woman, and this could be due to the following causes:
- You have just started taking a new supplement
- You have started using new laundry soap
- You're eating too much of spicy foods
- You are sensitive to latex condoms, pads, and tampons
- You have human papillomavirus
- You have missed your birth control pills or hormonal pills
- You are under too much stress lately
- You have cervical polyps or fibroids with infection
I would recommend seeing a medical professional to find out exactly what is the issue before taking action.
