Thread: is their some sort of supp that can ?

your arms being skinny relative to the rest of your body has to do with your genetic skeletel structure, you can't change how big your bones are. wrist size barely changes after you are done growing, thats why its used to measure your natural body frame. you can use straps or gloves with wrist support to stablize them.

well im 17 when do i stop growing anything i can take to help though ?

The only things that may help with bones are prescription items like $$$ growth hormone. Essentially speaking though its your genetics, thats life.

Pain from lifting where? Connective tissue? Bones? Joints?

Glucosamine/chondroitin, pick a reputable brand.