My last cycle I did, which was also my frist one, every inject was in the ass. Walked around after the first few like I had to take a massive dump. It was sust so it was normal. I got used to it and with better technique, the shots would no longer cause pain. I'm about to start my next cycle and will be trying the quads for the first time because my ass would be a pin cushion otherwise with all the injects I'm going to need. Good luck with your first ass inject...