Large Welt on My Shoulder After Last Pin

put 1 cc in my side delt last thursday. no pain or swelling whatsoever all of friday, saturday, and sunday. Monday woke up with a welt and swelling. its pretty sore but doesnt impede my workouts, did chest yesterday and back today with no pain. today is pretty damn huge.

it was 1 cc of test btw.

the inject went fine, bled a little bit but no juice leakage and went pretty slow so im baffled as to the cause of this.

ice? massage? both?