Is it bowel cancer

So my mum has been poorly ,

she has been having constant loose stools 6-8 times a day for the last 7 weeks apparently like a running tap . 

she has had a positive FIT test 

Since symptoms has diagnosed with anemia 

lost over a stone in weight in 4 weeks .

chrons and Celiac bloods were clear so not that  
 

she has a colonoscopy on Sunday.

 

Do you think bowel cancer or ulcerative colitis