Maybe cut down on your starch foods and drink plenty of water.
Fiber gummies are the only thing that’s worked for me after suppositories, enemas & stool softeners failed me 
If you’re that uncomfortable try getting a 28 ounce bottle of Gatorade and put 5 cap fulls of miralax in it. Do it first thing in the morning and be prepared to have diarrhea but it’s better than being in pain from severe constipation.