you would have to see your doctor. a once in a while brown discharge is normal and usually get it if your on the pill. but you have an ordor which could mean an infection.
this is just my opinion. but i m going to send you some websites with women who have the same problem hoping it can give you a better idea.

comments noted but what can be used to cure or treat this problem

you have to see a doctor so he can 100% confirm what you have. i also wasted money buy cream for a yeast infection. there is no easy home remedies.
i m sorry i couldnt be of more help.