My doc told me its a sign of them exercising there lungs so the more the better
In my case I just have a greedy baby. He is constantly drinking his amniotic fluid when I eat something sweet. Your baby could just be getting sips of your amniotic fluid
I mentioned this to my doctor, mine gets hiccups daily, I'm 36 weeks... and he said it's actually a sign of a healthy baby.
My baby girl had hiccups allll the time pretty much anytime i ate, drank, or layed down and she was born perfectly healthy no umbilical wrapped around the neck