I am in my third trimester with my first baby and have been feeling very rhythmical movements, almost like spasms, in the lower half of my belly. They are fairly quick, come at regular intervals and can last for a while (15 mins+). My friend suggested they may be baby hiccups. What do baby hiccups feel like? Worried that it may be something else, nearly called a midwife last night until the movements suddenly stopped.