my boyfriends stomach has been bugging him a lot lately, sudden sharp pains that feel like gas and feel like he really has to poop, but when he tries to very lil comes out and its runny or nothing comes out, he has been like this for the past 3 days. I gave him a stool softner the 1st night after this started and this did not solve his problem, any idea what this could be? should we worry. He ate a good amount of fiber day 2 and still has not had a normal poop. his stomach is pretty bulged like its still full.