Less than a week starting on my own as a nurse I've already screwed up. My charge RN tells me that I made a medication error a night before. I gave Endocet 10/325 instead of a 10/650, and for the rest of that shift I kept doubting myself and working a lot slower. One of the aides tells me something is wrong with one of my patients. Patient is all well restless and combative. I read his med sheet list a second time and found out he was given 60 units of Lantus on the evening shift. His sugar ended up being 40 and he couldn't swallow. A glucagon IM only raised his sugar to 47 for some reason so the MD was notified and they said to try another glucagon. The patient eventually came around but it was one of the worst experiences I had, I feared I was going to have to take the person to the hospital and earn extra spite from the ER staff for not knowing how to manage a hypoglycemic. I feel like this is just a sign I'm doing something really wrong. And right now I dread returning to work, because it was so embarrassing how I handled myself during the hypoglycemic situation. I almost passed out/burst into a fury of tears.