Hi ive been injecting my son for 8 years with the enbrel that i had to mix with no pain. this week they sent me the premixed injections and he freaked out from the pain and burning sensation. i felt so bad. no one told me that this was going to happen. i left it out for 30 minutes and i injected him in his arm which was very painful. any advice..don;t know how to inject in stomach which sound less painful..thanksView Thread