Hello i'm 19 and i have been going to the doctors very concerned about me having the same symptoms as colon cancer, i have lots of blood tests and they all came up normal and i have been diagnosed with IBS and i have a mild stomach hernia, but i am just soo concerned with why i feel like very sick all the time and tired i am making myself believe i am dying of cancer, it just feels like everyday i am feeling worse, i look in the mirror and i looks like i am more pale then normal, i almost feel weaker...i have had a GAD for 2 years now.....has anyone ever felt the way i do, convinced that they had cancer and they were dying from it???