Longtrmrn52

I work in a long term care facility and float. Was told in report that a patient had gotten 2 doses of pain meds during the previous shift. The narcotics were signed off in the narcotics book and count was correct. Patient complained of pain at the very beginning of shift. When I checked the MAR to see when he could get pain meds neither dose of the pain meds reported given were charted. I had experienced a decrepancy in the narcotic count with the same nurse previously. I found another discrepancy in what was charted on the MAR and signed out in the narcotic book. All were for the same drug and involved the same nurse. I reported this to the supervisor. Now I don't know if I over reacted. It is easy to forget to sign or chart something. Have I made a bigger deal out of this and caused a co-worker a lot of grief for something trivial?