EDNurse23

Looking for advice - I have been a nurse for 3 years and last night made my first ever medication error. I gave Bentyl IV instead of IM as ordered. I have never given this med before, I have seen it written as a prescription but it is not a common med used in the ED I work in. The patient had 3 other IV medications ordered annd I assumed that Bentyl was IV push as well. (I should have double checked the order, I know). After administering it, I panicked and was a nervous wreck. I immediately went and told my charge nurse I had made the mistake, then the ED physician. I called the on call pharmacist, who said the biggest risk was phlebitis/thrombosis. I monitored the patient closely for 2 hours and she seemed to be fine with no adverse affects. She was discharged, and her IV site looked fine when I removed it. Still, I am so guilty and was tore up about it the rest of my shift. I cried when I had to tell my charge. Even though the patient seemed fine at discharge, I can't help still feeling guilty and hoping she will be okay with no effects later on. I took all the appropriate streps and even filled out an event report on myself after the fact. Has anyone made a similar error? What should I do?