My surgery was on 3 days ago, and ever since I've been having bloody noses. Not running blood, but when I blow blood comes out with the mucus. Anyone else have issues like this? Is it just a dehydration thing?

When you're anaesthetised they stick a big tube down your throat. I've had a couple of surgeries in my lifetime and have often had a very sore throat afterwards, they're not very gentle. I'd say you've had bleeding in the back of your throat and that's what's coming out.