Hungry all of the time.

I had the Whipple on July 10, 2008, and now, four months later, I am hungry all of the time. Has anyone else experienced this. I've gained back eight of the 20 pounds I lost due to surgery. I was on the overweight side, which was to my benefit presurgery, but I don't want to become overweight again.

 Thanks.

My whipple date is Dec 14, 2007.  I lost 25 lbs. but gained it back and then some in preparation for chemo and radiation.  I even gained weight during chemo and radiation.  

I can't say that I am hungry all the time, but I do have a constant feeling in the pit of my stomach (intestines) that feels like it is either hunger or I am about to be in a fight-or-flight situation.  

 I eat a lot and am over my ideal weight for competitive x-country skiing.  I no longer stop myself from second helpings or constant eating.  Mentally, why not? I have had cancer.