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in young girls are common due to yeast or worm infestation or foreign bodies like pebbles, stones,pea, onion etc.
In Yeast infection it is usually white or watery and not yellowish.
In worm infestation, nocturnal itching will be marked.
In case of foreign bodies during masturbation
, yellowish discharge is possible and offensive.
Think of the possibility of sex abuse.
discharge is possible and that also mucoid clear or slightly whitish rather than yellowish.
Train her to wash the genitals from behind instead of from a front approach which may lodge infection from hind gut.
Examination of smear from discharge wet and dry film will give a clue to arrive a diagnosis.
You can seek the help of a gynecologist or a dermato-venereologist to get rid of the problem.
Get her well soon.