Please help

Hey guys I always have a crazy amount of discharge in my underwear by the end of the day and I don't mastrubate or anything. Also it smells really bad and you can smell it if I am not crossing my legs. Even when I am standing up I can smell it sometimes. I have ignored this for the longest time and I want to get rid of it. I don't douce or anything like that I just wash with water. Please help.