HGH - Shoulder Pain

[inncon]

I've experienced joint pain in my shoulder and elbow and also get knumbness in my hands. I'm on my 4th month on somotropin and started off with 2iu a day and now 4iu a day. I was told to shoot in the stomach its best place. I worked through the shoulder pain which is now pretty much gone but I still get the knumbness in my hands and arms.