H.O.
It's gas!!! Go to the store and buy some infant gas relief. My baby never cried; only grunted. My doctor said that is was normal and that she was just learning how her body works. I couldn't take it anymore so I bought infant gas relief. The first time I gave it to her air just push right up out of her belly! Then at night time I put her to sleep in her infant seat so that she wasn't sleeping flat. 6 months later and not a single grunt. I didn't want to give her little body any medicine, but now I am so glad I did and i wish that i had done it sooner.