During the second trimester, the mother-to-be sometimes feels small, regular cramps in her abdomen, which are known as fetal hiccups. Fetal hiccups are very common in the second trimester, some fetuses hiccup several times a day, and many ultrasounds can also observe fetal hiccups. Fetal hiccups are actually a way for the fetus to improve its lung breathing capacity, so mothers-to-be should not be too nervous and can use them to self-monitor changes in fetal position. Why does the fetus hiccup? Is it normal for a fetus to hiccup? Fetal hiccups are normal, just like adult breathing, and they are a way for the fetus to improve its lung breathing capacity. At around 28 weeks of gestation, the fetus will start to swallow amniotic fluid inside the mother’s body to exercise the breathing of the lungs, and the alveoli will continue to grow in the amniotic fluid. Just like an adult eating, it keeps swallowing. Between the thoracic and abdominal cavities of the fetus, there is a thick, hat-like muscular membrane called the diaphragm that separates the thoracic and abdominal cavities. Like other organs in the body, the diaphragm has nerve distribution and blood supply, and after the trigger stimulus that causes hiccups is transmitted to the brain, the brain sends out instructions to cause paroxysmal and spasmodic contractions of the diaphragm, and hiccups occur. What does the mother feel when the fetus hiccups? What do fetal hiccups feel like? Fetal hiccups are characterized by regular movements of the fetus in the mother’s belly, which occur once every 2-3 seconds and last for 2-5 minutes, sometimes 10-20 minutes. The specific manifestation is a hopping, similar to a heartbeat, and the mother-to-be will feel her hand on the beating place, and it will bounce and bounce, which is different from fetal movement, very, very regular! A careful mother will be able to tell. The fetus sometimes hiccups in the middle of the night, sometimes in the morning, when gently touching the belly, after a few minutes, it does not play, it feels very wonderful! You can use the phenomenon of fetal hiccups to self-monitor the change in fetal position The mother-to-be can actually use this phenomenon to self-monitor the change in fetal position. When the fetal position is cephalic, the part of the abdominal wall where the hiccups appear is roughly on the left and right lower abdomen. If the position of the hiccups is found to rise significantly, it suggests that the fetus may have turned into an abnormal fetal position and should be corrected as soon as possible under the guidance of a doctor.