I'm having pain in my breast 7 years after my saline implants. Why might this be happening?

I have been having pain in my breast lately and not sure what is going on. They are sore to touch, if I try to run or bounce the pain is worse. It seems to be in the area below my breast in that tissue. I've not changed any activities so nothing new going on. It's been going on for about 3 weeks now. It's almost as tho I'm pregnant the same tenderness but no chance of that. 2 years ago I started having a aching sensation that comes and goes in my upper arm in between the shoulder and elbow.