So this is my 4th cycle and I always pin in my glute with 500mg in a 1 inch 25G needle. I always rotate sides every week and the pain is minimal. The first vial of test e was great. I just moved onto my second vial of test e from Teragon and the pain has been crippling and my lower back/upper glute has swelled up. I thought I messed up the injection so I injected the following week on the other glute and the same thing happened. Has anyone experienced this before? Maybe I messed up both injections by going to high up? Or is it possible the second vial of test is bad or a different kind of test? Or maybe i now have cartilage build up? Man it sucks. I've given myself over 30 shots before and all was fine. Not sure what's up this time.