I remember I have worried about abdomen related cancers for a while now, maybe 2 months. My original worry was ovarian cancer but it soon warped to bladder or colon cancer. I had a UTI recently, which is a reason I began worrying, but I have no urine issues so that barely comes to mind... But colon cancer? Pfft, it's an itching worry. My doctor gave me Zantac so he probably thinks I have IBS, but that doesn't help my worries because IBS is basically a diagnosis saying they're unsure what's up. I once read an article about a 17 year old girl who died because her doctors misdiagnosed her colon cancer as IBS, even after many visits to the ER. That made me vivid.
I remember I once thought I had stage 3 colon or ovarian cancer that had spread to my head. This is despite me having no issues 4 months ago. I have since been telling myself my stomach is fine. My bloating and discomfort after eating is not a cancer. These stomach issues started the week I had my intense panic freak out, which spurred my other issues. Zantac did help my horrible gurgling so that's a nice sign.
Keep yourself calm. Analyze your symptoms just in case but if you seem normal and your doctors think you're fine, you probably are. Worrying will only make your symptoms worse and keep them coming.