positive FIT test

Hi I did the national bowel screening FIT test one year ago which was negative. Now I have a FIT positive of u18. My GP initiated this FIT test as recent bleeding of haeomorthoid. GP confirmed internal haromorrhoid by internal examination. I have had a few other symptoms for about a month that have cleared now since using ant avid pill prescribed by GP, which another GP previously suggested gastritis as I am under a lot of stress. Anyway I am alone and panicking. Got a call from a receptionist at surgery last night to tell me FIT abnormal.. I checked recorfs it says u18. All I know is I have been told I have a phone appt with a GP at the surgery next week to discuss my abnormal test