Rookie mistakes - part 2

If you require opioid pain medications you almost certainly will become constipated. Just assume this is true and be proactive. If you are able to eat be sure to have enough fiber in your diet and ask you doctor about taking a stool softener such as Colace. Manage the constipation before it becomes a real problem. You might also consider a product such as miralax. Be careful about overusing laxatives, they are "addictive" and this is not something you want to have to take for the rest of your life.