Cervical fluid is self cleaning it cleans out any infections etc, don't introduce anything else into the vagina to 'clean' it as you actually increase your risk of infection. For some reason women have the idea if theirs lots of cervical fluid it's unclean and messy but it's actually the bodies way of keeping itself clean hygienic and healthy. Even strong soaps can upset the natural pH balance.
A shower once a day should be fine, if you feel there is heaps of cervical fluid it probably means your body feels it needs to, let it.