Difficult gas evacuation usually happens when there is ineffective muscle-nerve coordination (abnormal gut reflexes) in gastrointestinal track.
This lack of coordination may also produce constipation with retention of stool.
Constipation, along with abdominal bloating or a feeling of gas in the intestines, are common problems in Irritable bowel syndrome (functional intestinal disorder).
Be careful with fiber intake. Increase its intake slowly in your diet.
Some people feel bloated and have gas if they increase their fiber intake too quickly. Gas and bloating may improve as soon as you get used to eating more fiber.

Do you often feel abdominal pain and cramping, that may go away after having a bowel movement?
Are you experiencing a strong urge to have a bowel movement?
Do you feel like you still need to have a bowel movement after you've already had one?

I think you have hit the right spot. It could be ineffective muscles in my rectum or lower abdomen. I do not have any abdominal cramps, but I do feel arthritic-like pain in my hips.

Yes, I do not get a "void" feeling after I have evacuated.
Regards, Puneet

Eating healthy food, drinking enough water, exercising on a daily basis, will help you overcoming the constipation problem.
Once you get regular, normal bowel movements, it is expectable the gas issue to resolve itself, too.

Have a health day!
Marija

I too am suffering from not being able to pass gas. Mine started with my first pregnany, about 7 weeks into my pregnancy I woke up one morning with severe heartburn and severe gas build up. The heartburn eventually went away around my second trimester but the gas problem stayed. I thought there was some sort of blockage in my colon that was preventing me from passing. I started feeling every moments of the gas build up and bubbling sensation. It would build up starting on my lower right side of the abdomin slowly move across the mid section and all of the sudden get stuck and not pass any further. It constantly builds up and then with great force just feeling like it was ripping through some blockage. The pressure is so bad I feel like there is a steel rod in going across my mid section and I feel like my back is going to snap in half. I also feel like my chest is going to burst. It got worse after my second pregnancy and finally had a colonoscopy done and the Dr found absolutley nothing wrong my my colon, which was baffling. Now the symptoms are getting worse with the burning feeling in my entire abdomin, chest and throat. I feel like my going to lose my mind and just miserable everyday. It's been four years now and I don't know if this is something I will have to live with for the rest of my life. I don't know how much more of this misery I will be able to take.

Hoping for some answers,

Su

Dear Su:

My mother has the exact same symptoms that you have. Pain in right side which moves across the mid-section. It is a chronic pain and seems to consume her every thought. Just like you, every test known to man has been ran, to find nothing wrong. Every medication including pain medications have been given to her, to no relief. Any one that can help I would surely appreciate it.