Hi, I have pain in my right shoulder and beside under arm down to collar bone from 5 days. I had small lumps in my right under arm which I pressed sometimes to check wat was that. Put hot pad. Did shoulder rotations .next day I got this shoulder pain. Under arm lumps had gone. And I got my periods 4 days early. Now i'm taking calcium tabs. When waking up in the morning I am getting upper back pain which lasts for sometime .is that something related to periods.