Seeing E. N. T Specialist tomorrow - what will happen when I'm there?

Hello, sorry to bother you but I'm going to the Hospital tomorrow to see a E.N.T specialist. I'm really worried about it because there is a small pea sized flesh coloured round dome shaped bump on  one side of my uluva I noticed it about 3 weeks ago. I'm a non smoker and drinker for about ten years or so. I really don't know what to expect or what will happen when I'm seeing the E.N.T specialist. So scared  not been eating much or doing my daily  routines.