After .5 cc of tren via slin pin in the delt, it swelled up. Not too big, but definitely noticeable. Did another shot in the right delt., no problem. One ine chest, and its fine. This happened at the end of lest cycycle and I was using 25g 1.5", so I don't think its that. Btw, I'm using the slin pin because ed administration. I have no redness, no fever, slight soreness.
What could this be?
What could this be?

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