Baby hiccups in the womb: is it normal?

By trimester

Weeks 1–13

1st trimester

Your baby may actually begin hiccuping around 15 weeks, but this is well before most people can feel any fetal movement, hiccups included, so don't expect to notice them yet.

Weeks 14–27

2nd trimester

As movement becomes easier to feel, some people start picking up on hiccups later in the second trimester, though for many they become clearly recognizable a bit later, in the third trimester.

Weeks 28–birth

3rd trimester

This is when most people notice hiccups regularly. One large study found feeling them, especially daily, was linked to a lower stillbirth risk, not a higher one, so a familiar hiccup pattern is generally a reassuring sign at this stage.

What does the evidence show for fetal hiccups in the womb?

• Fetal hiccups are one of several distinct movement patterns, alongside startles, stretches, and head or eye movements, that typically begin around 15 weeks of gestation, well before most people can feel any fetal movement at all. 1
• By the third trimester, perceiving fetal hiccups is the norm, not the exception: a study of 274 pregnant women found 92.2% had felt them, either occasionally (44.5%) or daily (42.5%), and women interviewed at term were more likely to report hiccups than those interviewed earlier in pregnancy. 2
• In a large stillbirth case-control study, daily perception of fetal hiccups was linked to a substantially lower risk of late stillbirth (adjusted odds ratio 0.31), and feeling hiccups at all in the two weeks beforehand was also associated with lower risk, making frequent hiccups a reassuring sign rather than a worrying one in that research. 3
• A separate clinical review takes a more cautious view specifically on very frequent hiccups, suggesting that hiccups occurring daily after 28 weeks and more than four times in a day warrants a fetal evaluation, tying this to animal research in which intermittent umbilical cord compression triggered fetal hiccups. 4
• The same stillbirth study found that an increase in the strength of felt fetal movements was an even stronger protective signal than an increase in frequency, and that a decrease in movement strength, not an increase in hiccups, was the pattern linked to higher risk. 3

When should I call my provider about fetal hiccups in the womb?

Research findings here genuinely point in different directions, so pay attention to the overall pattern rather than any single hiccup episode. The largest study on this, a stillbirth case-control study, found that feeling fetal hiccups, especially daily, was linked to a lower risk of late stillbirth, not a higher one. A separate clinical review takes a more cautious stance on very frequent hiccups specifically, suggesting daily hiccups after 28 weeks that happen more than four times a day could warrant a fetal evaluation, based partly on animal research tying hiccups to umbilical cord compression. What consistently counts as worth a same-day call in the research is a real drop in how strong your baby's movements feel overall, not hiccups themselves; contact your provider if movement, hiccups included, feels weaker or less frequent than what has become normal for your pregnancy. When in doubt, call your obstetric team the same day. Early input almost always beats waiting, and the on-call line exists exactly for this.