I'm very paranoid I'm sorry! I just gave my Rooster his first Tylan 50 shot and the needle was a 20 gauge because they didn't have a 22 gauge and they said it would work for him. I tried to stick him twice and the first time I got in the skin and he squaked at me and wiggled out of my grip. I gave him a minute and tried again and was able to get it in. I know it hurt and I was getting ready to cry. I massaged the site and I saw no blood come out, so I put him down with his hen. A few minutes later I rechecked on the injection site and noticed two red marks (no doubt from the needle) but it didn't look like blood was coming out it just looked like a little red spot. I watched him for a few minutes seeing if he was allergic to the medicine, he was fine. I'm worried about Necrosis now, and the red spots. Are the red spots normal after getting an injection? (There are two because I pricked him twice trying to be gentle) What should I look for tomorrow as far as Necrosis is concerned?