I have been having repeated episodes of vomiting. This started in March 2012.
I sometimes would have this occur once a week.

I did have gallstones and thought this could be gallbladder (GB) problems. Dr removed GB in Sept 2012.

Now since this time I have had two more episodes. I called Dr's office and they felt it wasn't anything to be concerned about at this time.

I have lost about 10 percent of my weight in 9 months and I was thin to start with.

Could I have cancer? Wouldn't the surgeon see if I had cancer of liver, stomach, or pancreas when doing GB removal operation?