Do you think sweet foods give baby hiccups?

I'm 35 weeks preg. Last 2 or 3 weeks I've noticed that my baby boy is hiccuping. It's very cute. Doc says it's because of amniotic fluids. But...every time I eat too much sugar (milkshakes, ice cream) I seem to notice it brings on hiccups. Anyone else think sugary foods cause hiccups??