Problem post-surgery Gallbladder

I'm hoping someone can help.  10.5 months ago I had my gallbladder removed after suffering for 6 months with gallbladder attacks from stones.  I'm 31 now.  I had a very painful 8 week recovery, but have been relatively ok since then.  A little pain now and then if I eat a big meal.  Today the oddest thing happened.  I ate lunch ( two slices of pizza and a salad) and about an hour later....for lack of a better term.... I pooped my pants.  I didn't feel like I had to pass gas or go to the restroom, I was just standing at my kitchen counter making a phone call when, splash, I was soaked in very watery stool.  (Sorry for the graphics.)  My stomach has been hurting since then for the past 6 hours, but no further stool passing.  Has anyone had this happen or heard of anything like this?  I could really use some advice.

[CalGal]

You may not be able to process fats the way you did before the surgery and it may take some time to readjust. You may want to consider following a low fat diet for a number of months to see if that is of help.

[Cheri70]

This happened to me while driving in the car!  I did have a cramp and then bam. Not pleasant.  It hasn't happened since or before.  Sure hope it's a one time thing too!

(had my GB out 7 months ago)

[Twilight_Princess]

Are you on any new medication? This has happened to my sister-in-law. No warning no nothing, it just came. Come to find out it was a new medication she was taking. Just a thought.