I been on a treatment called benlysta (belimumab) its a infusion but don't see its helping that much headaches and joint paint witch sometimes is unbearable?

See details. I assume you are taking it for treatment of lupus. Headaches in lupus are usually not related to lupus directly so Benlysta (belimumab) probably will not help. It also takes Benlysta (belimumab) a few treatments to really help.