infant colic

My daughter's two week old infant has "colic". I have lived through colic before with one of my children so I have no doubt that her symptoms would be diagnosed in this way. She has long bouts of crying...inconsolably...is obviously experiencing pain...knees drwn up...tight belly. The pediatricians have been less than helpful. Their suggestions are limited to tight swaddling and rhythmic motion. I find those suggestions insulting as we have obviously tried everything. My daughter is breastfeeding and watching her diet carefully...no cows milk or gassy foods.
Do you have any suggestions?