So I’m 22 years old, been on the pill for three years but plan to change it soon due to weird side effects occurring. I always get an axhe or pain in my left breast 1-2 weeks into the pack,

This month the pain seemed to radiate into the back of my left arm. It only lasts like a second and is just like a sharp ache and then it’s gone. This has happened before but not for a while. Is there a nerve in the Breast

Connected here or?? I don’t think it’s a heart attack lol