injection problem (left delt)

[collin]

I rotate spots from my quads to delt i don't like gluts but i have a problem with my left delt every time it hurts for three days never have a problem anywhere else

[C_Bino]

So what are you asking? What exactly is your question here? Why it hurts...could be a number of things really.
If you really cant handle it than just use another spot; biceps, pecs, triceps, lats...a different muscle in your quads, even another head on your delts. Many many options.

[Kale]

What the Tittie Master said !!!