After having intercose with your gf you found out there is white things outside your condom but your condom din break or what you tried to put water inside and the water still in there the water di?

This has happened to me too and I was worried the first time. It's probably just lubricant and/or spermicide. Or... it may be from your gf's pussy, perhaps because of an infection. If it smells bad then I'd recommend you get it checked.