This is a little personal and may sound gross if you don't experience it too, but I always have light brown-ish stains on my underwear and it makes me feel ashamed and embarrased.
I doubt what it is all the time as I shower daily and have good general personal hygiene, thus it frustrates me when I always stain new underwear. I am afraid to let people to get close to me romantically over this, as I fear they may see and think I am gross or something.
It's something that I am very insecure about because sometimes I start to question my hygiene, idk what do to.