No. Constipation 2 days after hernia surgery is not serious. You may be more uncomfortable with bloating than usual but this is really just the surgery. Almost everybody is constipated after surgery while taking narcotic pain medications. The constipation usually clears as soon as you are off the narcotics. Straining a little to have a BM is okay. Switch to over the counter pain meds as soon as you can. If you have problems with chronic constipation and want to do something proactively before surgery start taking Metamucil 10 days before surgery.