I had my first experience today with a painful injection. when I started to push the plunger in I got a very painful aching burning feeling in my delt so I pulled out right away and went in the other side My delt looked and felt like it had a sun burn for a few minutes after, and theres a bit of a lump there as well .I have been alternating between delt's and bi's for my tren shots.....that gives me four sights to change up at one 75mg/ml shot a day. The pain went away shortly after aswell as the redness.....my guess is its just a build up of oil between the muscle tissue. What do you think ??
and how long should I wait till I try and go back in the same delt??
and how long should I wait till I try and go back in the same delt??

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