i have the same thing.if the pain is on your right side it is your gallbadder,in the beginning it is set on be certain types of food but by the time they figure it out it does not matter what you eat or movement does not change or ease up the pain,it will start under your breast  to your side all the way up to your shoulder blade ,it feels like a towel when some one it "ringing it out"after it hits the water.it took 4 months and 4 doctors before the surgery was schuled,because i was only 19.doctors said it is "a old woman"problem,when the doctor went in with a laser he said it crumbled .the worst he had seen in some time.i woke up from surgery and felt 1000% better,i also had a 5 month old baby boy during all of this.feeling find for almost 3 years when the pain returned only on my left side ,still pain but a sharp "bring you to your kness" pain,went to the doctor,1 cat scan revaled 3 cyst on my ovaries,i said ok,and went home.i felt better knowing that even thou it hurt it was not deadly,2 months go by still pain but controlled through anaprox.one day the pain was so bad i could not take it and med did not help,went to the e.r. another cat scan revaled my spleen was enlarged,finally an answer but whats the cure. nothing that i found yet

I don't have the answer--only more questions. I too have been suffering form a pain under my left breast that has moves through to my back and up under my shoulder blades. My only relief has been to take pain pills to dull the pain. Last month, I had a CT for something else and while reviewing the CT film with my doctor, he commented that I have an enlarge spleen. That wasn't what he was looking at, so it was just a comment in passing. When I got home I began my own internet investigation. While surfing the web, I keep finding reports that an elarged spleen can cause this pain on your left side up into your shoulder. WHY?????? and what can I do about it???????