Complications after gastric byp surgery?

Okay here's the deal: I had the surgery in December of 2008. For about a month I've been having sharp pains in my upper abdomen like right under my rib cage. These pains come and go and last from about 2-5 minutes. From time to time there is blood in stool. I was told if it was bright red it's probably just your hemorrhoids and since I've had hemorrhoid problems before I figured this was the case. On Saturday I noticed not only was the blood on the tissue but it was intwined in the stoll and there was a lot of it. So I called my surgeon and he told me to get myself to the ER. I went they did blood work xrays and a rectal exam to check for blood. My blood work was okay and so where the x rays but there was blood found during the rectal exam. They sent me home and told me to contact my surgeon as they were not familer with gastric byp the way he was. He sent me up for a cat scan gave me some pain medication and sent up a follow up with him. I'm kinda of worried (I have an Anxiety Disorder) that something serious could be wrong. Like my pouch (new stomach) could have rippedor something. These pains cannot people gallstones as I do not have a gallbladder. Has anyone been though this or know anyone who has. Can anyone ease my mind until I see my surgeon about what this could be? The ER did a pregnancy test it was negitive so it isn't that. Thanks!