This week Im pinning delts mate. Today will be right since I did left the other day. I honestly don't feel anything, I'm on test prop and tren ace at moment, as you know. The initial injection is painless, after 20 mins or so there's a slight sensation but nothing that really prevents me from doing anything. I usually pin after I train an have a shower, that way muscle is warm an clean. I still obviously sterilize etc the area, but I feel having a shower just before is an extra precaution in my eyes. You'll be right champ.