It is completely normal for your baby to experience hiccups during pregnancy, even as early as the second trimester. Hiccups occur when the diaphragm muscles contract involuntarily. This helps in strengthening the respiratory system and preparing your baby for breathing outside the womb. As your baby grows, their hiccups may become more noticeable to you. Hiccuping multiple times a day is not a cause for concern unless accompanied by other unusual symptoms such as reduced fetal movement or discomfort. If you are worried, consult with your healthcare provider who can provide reassurance and address any concerns you may have.