I've been on getropin hgh for one month now. Never had any problems until recently... when I inject into my belly it hurts like a mother F!!** for about ten minutes and then the pain goes away. I've always injected in the belly since day one. Why all of a sudden this pain at the injection site??? it doesn't even get red it just hurts a lot. Im injecting 5 iu's in the same spot should i be injecting maybe 2 iu's in one spot and 3 iu's in a different spot? Could i be allergic?? I hope not