I was diagnosed with gallstones about 6 months ago. I had one really bad episode one night - just absolute unrelenting pain on the right upper back area - which is why I went to the Doctor. After the ultrasound (which was no big deal, a few times they had to push hard on various areas of my abdomen - probably becuase I'm overweight anyway), you could see there were about 4 big stones in there. I haven't done anything about it yet. The surgery is minimal, but I haven't had any more episodes, so I haven't been in any big hurry to see a surgeon. I admit that I am also a little worried about the things I've heard regarding diarreah after the surgery. Since my ulcerative colitis is under control, I would not like to deal with this issue again!
Good luck to you!