Have cancer been on pain meds been having trouble using bathroom but enamas normally work but it's nor working this time?

Use better Meds: Constipation is a common side effect of pain meds. So you have to take a laxative along with pain medicines especially with the potent pain medicines. Enema is a difficult task. So buy a medicine like Lactulose and take it(one to 2 table spoons) as needed but you will have to take it 2-3 times daily and adjust the amount taken to your nneeds