You know what you have to do. Get rid of the cats. Eventually the fleas will die off, but expect to get bitten a few times before that happens because they'll be desperate for food.
Either that or you can bug-bomb your entire house, and keep the cats inside 24/7.
I'm sorry you're having such a crappy time of things....I wish there was something I could do to make it better!
{{{{{{{{{{{{{{{{{{{werewolf}}}}}}}}}}}}}}}}}}}
There, that was a cyber-hug for you. Hope that helped.