Fetal Hiccups? Safe or concern?

So my little one is always having hiccups. I just read they are completely normal and that it means that the nervous system is fully developed and growing stronger as well as the diaphragm. But I also read that too many cases of hiccups for prolonged times (over 10 mins) can mean umbilical compression and can mean a sign of fetal distress. She is ALWAYS having hiccups...should I be worried based off what I read or are hiccups normal and safe?