I believe my co-workers have it in for me

This morning when I left work they were filling out an incident report and they were very quiet when I was around. I give insulin in the back of the arm after inspecting the abdomen and I seen that the abdomen was tough more than likely from the long term use of insulin therapy. I have looked at all my resources and I have also review my nursing school notes and got opinions from my friends who currently have DM and they use the back of there arms all of the time. I heard one of them talking about inappropriate patient contact would they think that this is? I am a new grad and I have found out in just one night of working in an LTC facility that I hate it ! nurse and 3 CNA's to 61 patients this is pitiful and a disgrace to the nursing world that I envisioned I think that I am not cut out for nursing if this is how heartless this world has become. All of these people need more attention than this I am doing orientation and I noticed a pressure sore on one of the patients and the nurse that is orienting me didn't make a big deal about it. I have a gut feeling that the workers that I was working with are going to stab me in the back and pull out the knife and lick of the blood and stab again just to get another go at me. HELP I hate my choice to become a nurse in just one night What should I do????????????????