My friend and i are on a test e cycle and were in the 10th week. We are using the same gear and the same sanatary injection techniques but he has got a swollen bump on the cheek above where he injected, he says its painfull and kida red but not warm and he has no fever. he rotates cheeks but could it be just irritated muscle? should he use a different site? if its not an infection what could be the problem?