having a hard time getting milk

So I'm a new mom, milk supply still hasn't dropped yet (which kind of makes me sad) but I had her first doctor appt today and they gave me some formula in case. My question is will this confuse my baby if I give her like one ounce?? I really want to breastfeed, I just need to get it together and keep trying and stay hydrated. also will try breast pump to pull some down.