Scared of whats to come

Hi

I'm a 34 year old women and for the past two weeks I've had a change in my bowel movements and abdominal pain. I'm awaiting blood tests and stool sample results.

I'm so worried its Bowel Cancer. I haven't been sleeping, having the shakes and sweats. Last night i had a burning in my chest. 

I just cant stop thinking it Bowel Cancer. I've got a 3 month old and 6 year old at home.