dull ache after eating

after and sometimes during eating, I get a dull ache in my right side right above my waist and in the back area.  It is not a hard pain but just enough to let me know it is there.  It usually doesn't last long only about 15 min to a half hour.  What could it be?  This just started about a week or so ago but it is everytime I eat and doesn't matter what the food is.

[Christopher R Watters, MD]

Many possibilities but a gallbladder problem would be high on the list.