First time going to a phycologist

Ok so here’s a little bit of backstory so you can know exactly where I’m coming from. I’ve never ever addressed my mental health or really talked about it. I’ve convinced myself for years that I’m ok and I’m not bad enough to where I need help. I have a few close friends who have lots of mental issues and have done bad things to themselves to try to ease the pain. I convinced myself that because I wasn’t as bad as them that I didn’t need help or didn’t deserve to complain about my own mental state. I became everyone else’s therapist for there own issues and rarely ever have people listen to me except for a few close friends. One day I went to go get a physical done so I could partake in a sport and one of the things the doctor gave me was a paper to fill out about how often I feel sad, if I’ve ever thought about ending it all, etc. So I answered it and I didn’t think she would address it cause I didn’t think my answers were abnormal but she then looks it over and turns to my mother and tells her she thinks I might be depressed and she was gonna recommend me a phycologist.

Fast forward to now and I have my first appointment this Wednesday and I’m super as I don’t know what to expect or what’s gonna happen as I’ve never had to address my mental health problems before. Any advice and story’s from personal experience would be great.