Does anyone understand FIT test results please?

Hi, I've been bleeding from back passage on and off for months. The last colonoscopy I had was April last year. The result was not positive but I had raised inflammation. This time the FIT test has come back positive. Doctors letter quoted FIT (90) and FCP (1144)  They have said I need another colonoscopy which I'm waiting to hear. 

Does anyone understand what the result means? Should I be worried (obviously I am worrying but currently don't understand the results)

Any advice welcomed, thank you