nah, injection site isn't too bad, prop, winny, etc might be bad, but its not something you cant handle...imo...but as far as testing you should look into half lifes and testing times for what your going to be taking, some stuff i.e deca is active in your blood stream as far as 18 months after your last injection, where as a short acting ester will most likely be much less...and the only fear of injury is to fear for hurting other players...good luck