Need advice about cats and pregnancy

Cass

So I’m 6 weeks pregnant. My friend had kittens and my girls wanted one so they each brought one home. They were to be outdoor cats so I didn’t really worry since I would not have a litter box to deal with.

Now I’ve started reading (yeah I know. Should have done that before) and come to fine out, outdoors cats are more risky? What should I do? She’s a friend so I can easily return them. I just need to know if you all think it’s necessary.