Hi! first every child is different so you should see the doctor. I had this kind of thing happen to to of my boys, they were both caused by different thing and fixed in different ways. my oldest got colic when he was born to the extent that he lost weight, and later developed a very sensitive stomach. He got gas bubbles in his intestines that would not work themselves out, and he wouldn't fart. he also woke himelf in the night. Two things helped him Simithicon (a gas releaving liquid found in the baby section of some stores or healthfood stores. And massaging his back counterclockwise, or the stomach clockwise. ( this is the natural directions of movment for the intestines. My fourth child Got constipated at an early age, And his body got in the habit of holding back, even after the constipation was gone. his body kept packing it until he couldn't go at all. we took him to three doctors, tried all there medications, (one of which was so bad it made his stomach cramp and burn, so he couldn't eat and lost weight) This continued for over a year, until I tried a Cumbacca mushroom it's a yeast that you make into a drink. you can find it on the internet or I can give you some. It settled his stomach, and kept his stool soft untill his body learned to release on it's own.