I am doing Serostim HGH for about 3 weeks now. I started with 2 iu for first week and 3 iu for second week and then 4iu for 3rd week. Today I did 5 iu and I have very bad stomach pain. I never had this before in my life. Should I go back to 4iu and stay there? I do 1st injection at about 4am and the second around 1pm if that helps. All of you thanks for your time for reading my post.