Mmk..I need some help...

When i crashed a few years ago & ended up w a sterniclavicular dislocation...I was just told I needed to strengthen the upper body and things would move along well..Great advice

Urm..it's not working and am getting really frustrated with the flare ups which keep me from swimming/biking fast(ish)...It's not much fun...

Do i bother my cool dr about this to get it sorted? I've been told there's not much they can do but anything is better than bone slivers scraping together, very sore sternum etc. After 4yrs I would not expect this to be happening...

So...any ideas?