Nerve pain 17 years after breast implants

I had breast implants 17 years ago. At the time, I had shooting pain in my left breast. Not constant and periodically which I believe involved the implant shifting to my left side (think laying on back sleeping). Implants have been fine since otherwise. A week ago, I was leaning forward and pushed myself up with my left arm. It immediately caused the nerve pain and it has been periodically since if I move wrong, raise arm shoulder level. I'm waking up at night from pain. How can I resolve this?