DD2 hiccups a lot in the womb and a lot outside (still at 10 months). very very content baby, never cries unless hungry absolutely no colic or even trapped winds or trapped burps!! DD1 no hiccups inside, a bit of colic (still bearable) where did you hear that?
I had hiccups lots with both my pregnancies but only DS1 had colic.
I remember reading somewhere that drinking pro-biotic drinks during pregnancy had a positive affect on colic/reflux. Having gone through hell with DS1, I took a daily yakult (or other such mini drink) and my DTs were pretty much colic and reflux free...one of them was a bit of a sicky-up baby but none of the twisting and crying for hours.
One of my twins hiccuped daily whereas her sister never hiccuped (but kicked lots). I was a bit paranoid at birth that the doctors would muddle baby a and baby b, but I need not have worried as even after the birth, one of them hiccuped regularly (with no colic) and the other kicked loads ... (also with no colic). both had reflux though.