Take it easy, what was the test positive for? Did they not tell you,Proper hospital procedure, that I know of would be for the hospital to give the results to your G.P then, your Doctor should discuss it with you, what ever the outcome.
Take a deep breath you don't know yet. stay calm.
Now I looked back on your posts, you had a colonoscopy, they didnt find any thing, that's good, does Crones or Colitis run in the family? I ask because my sis and brother have it and with some pills and proper diet it's very manageable, now only if, not to be alarmed either way, Please speak to your doctor, She will have the results soon.