I have just injected my first two injections, 1 ml each injection and one injection each week of testosterone into my left deltoid (first week) then my right deltoid (second week). Both deltoids, even the one i used a week ago, are experiencing swelling and pain down into my biceps. It is a thick oil and I injected it slowly both times. The second time I warmed the solution under warm running water. That helped with the injection but not the swelling or pain I am now experiencing. The needles I am using are all sterile and sized at 23 gauge x 1. Am I doing something wrong? An I supposed to insert the full one inch of the needle into the muscle? HELP Please. Thanks