Re: Making strange slurping sound.
Well, maybe she was nursing a lot in last few day or so and she upped your supply, so now you have an oversupply again. For fast letdown try to nurse her more upright, let her sit in front of you, latch her on and lean back, laying down seems to help too.
Also, have you checked if she is teething or she has thrush? Maybe this is a problem as she is breaking the suction also at other times not only at letdown.
Is she doing this at every nursing session?
Tandeming mom to 2 years old DS and DD born on 15/12/2007