Please help me east my mind . Do I have some sort of intestinal cancer ?

[JohnnyBanana]

32 yr old Male, Little overweight but active on a daily basis . Usually I have several bowel movements a day , some loose some hard but for the past two weeks I have had nausea , mild cramps and sharp pains in upper left stomach about midway and the same on the right side and some on the lower left , and also have had some cramps that spread around . I have excessive gas and burping , yesterday my stools were dark brown and kind of firm , this morning they were very light colored kind of tan but loose and then this afternoon I had diarrhea that was yellow and smelled really bad . I have lost about 15 pounds in the last few weeks which I am sure is stress , or so I hope . I have been to the GI doctor this morning and they really gave me no answer only that it could be a lot of different things .I had blood work drawn and I am scheduled for a Colonoscopy , and Upper GI light to be run down my throat and a CT Scan of my belly all in the same day but that is two weeks away. Two more weeks of worrying myself like crazy ,  . I have had really bad health anxiety the last two months and I am terrified that I have some sort of cancer either in my stomach , pancreas , liver , colon etc. And of course everything on the internet points to the same. Has anyone experienced the same pains . I am just freaking out .

[Katie82123]

I had the same and thought I had cancer. I got a colonoscopy and all was healthy. I had been under a lot of stress. My elimination diet five years ago was no gluten no dairy but when I get exposed to them again I get sick