i injected in my delt today and before i aspirated as usual, no blood just air as usual. so i started injecting and i swear i shot a whole cc in me in like 5 seconds. my past 7 injections took much longer and were a lot harder to push in. this is the 3rd time ive done delts and never had this problem. im assuming i didnt inject in a vein because i first aspirated and i didnt get sick and die or anything. what could have happened?