This has happened to me after my last couple injections... If I pin my left glute its in the left upper part of my glute near my tailbone, if I pin my right glute I have it in the right upper part of my glute near my tailbone.. I'm pinning 250 of test c with a 1 1/2 in 25g needle... Its not a really bad pain it just feels like a bruise... Is the oil just settling up there or something??