I am hoping someone can help me as I really need some sleep! My 5 week old baby has started really grunting and groaning all the time. He is worse at night and when I feed him. He goes red in the face like he is straining, brings his knees up and groans constantly. I am struggling to feed him as he goes so rigid and shakes his head away from the bottle. It upsets me to hear him making the noises all the time although he doesn't seem to be in pain just uncomfortable. He's formula fed on aptamil and poos once a day. Any help appreciated!