Insect repellent while pregnant?!

I know they say it’s safe to use while being pregnant, but rn we’re dealing with a flea infestation at my house so I’ve been wearing insect repellent every night before I go to sleep. I read somewhere that it can go into your bloodstream and possibly affect your baby. Now I’m totally freaking out and I want to stop using it, but if I stop I will wake up with tons of flea bites 😭 does anybody know more about this or do you guys think I’m safe?? We’re having the house fumigated this week so I’m a little relaxed but I’ve been spraying myself for weeks now so I’m just a little paranoid