Has anyone had an Endoscopy done?

Hello ladies, have any of you ever had an endoscopy done? Can you tell me about your experience. I might need to get one done and Im super nervous about lol I know Im a big baby!! But I have horrible gagging reflexes🙄 Was it scary, did you guys gag the whole time?? Lol I really don’t want to have this done😢😭😅