Fi this has been a problem for us since Emily was born - and she used to get them while I was pregnant. I have found that feeding her helps but you do have to keep attaching her if she lets go due to a hiccup. The midwife told me it does't bother them, but it sure bothers us when she wont go to sleep. Another couple I know give their son water from a bottle straight from the fridge, they reckon it works wonders so either way feeding seems to help you just have to perservere until they stop. Hope something works for you.