My brother is doing a cycle of Test 400 by itself. Its actually a mix of test e,c and p. mostly test e and c. He has all the proper on cycle and PCT but the product was expired in 2006. If anything I thought it migt loose some potency but not be harmful at all. I gave him the injection so I know everything went good on that end but its now 3 days later and his whole ass cheek is swolen and sore. No signs of infection but he's really in pain. Any suggestions?