My last bowel movement had whole sections that seemed to be an yellowy sort of colour! Ive read that this can be due to liver disease! Im 26, and do drink, sometimes to excess in the past the way alot of people my age sometimes do... could I have given myself liver failure?

I had bood tests done the other day for irregular periods (so unelated to this), and one of the tehings it said they would test for is liver function (apparently this is fairly standard) and now im terrified its going to come back saying I have impaired liver function!!

Has anyone else had anything like this and its turned out to be nothing?