Constipation or incomplete bowel emptying is a major cause of urinary issues. The bladder and bowel share nerve control and are located adjacent to each other in the body. Any issue with one of them can lead to problems with the other. For example, if the colon becomes blocked due to constipation, it won't be able to release its contents which can lead to urinary retention. The good news is that most cases of constipation can be resolved with proper treatment. If you're not completely empty after having a large meal, have difficulty moving your bowels, or feel like you need to go frequently but aren't able to, then you should see a doctor so that any underlying medical conditions can be treated. In addition to being treated by a physician, constipation can also be managed at home. A well-formed stool includes both hard and soft stools, but if you struggle with defecating regularly, it's possible that you go through periods where either type of stool is likely to be absent from your stool pattern. This can be caused by certain medications or diseases that affect the intestinal tract, such as irritable bowel syndrome (IBS). So, yes, your intestines can prevent you from passing urine. In fact, this is something that everyone experiences from time to time.