get yourself a 23 gauge 1 inch needle and stop being a baby. This is not surgery and will not hurt you. Most people do not look foreward to geting injections but hey we do it almost every year. Tetnis shots or vaccinations or wharever.....
I love when I shot my Deca which is oil based and I shoot with a 23 guage and I need to inject then sit with the needle in my ass for like 4 or 5 minutes....really...4 or 5 minutes because I want to make sure it doesn't ball up and I want to make sure it is not pooling........I promise it is more mental then physical..it really doesn't hurt.