When a baby has hiccups in the belly, he or she will feel a continuous beating at a certain point in the belly, just like the human heartbeat, which continues for about 10 minutes each time and is particularly fixed, and will also have an itchy sensation. Generally, hiccups occur more frequently at night, when the belly is more relaxed after lying down at night, which is conducive to the fetus’ activities and shows the hiccups more obviously. Especially in the middle and late stages of pregnancy, when you put your hand on the side of your belly before going to bed and feel the fetus sliding, the fetus is hiccuping inside your belly, which is normal and does not require too much tension.