My bub's has had hiccups since about week 30 at least twice a day. My nephew also had hiccups while in the whomp and hiccupped every now and then after he was born but soon grew out of it. Ive heard it is a good sign that bubs is practicing his/her swallowing as it should in while in the whomb and its nothing to worry about at all.. midwives ive mensioned it to also agree.