Anyone with inside pets that occasionally go outside

Savannah
What do you do about fleas??!! We have 3 cats, one goes in the basement regularly but the other 2 stay inside for the most part... We have tried EVERYTHING and I'm 38 weeks pregnant and they're just getting more and more annoying. Every time I see one I wanna scream. We've used the foggers, bought stuff to spray all over the house, given all of the cats multiple baths, and we give them the flea pills regularly... nothing is helping and I'm going crazy.