Pls help

I have been experiencing symptoms of a hiatal hernia for about 6 months, but I only realized it recently. I figured it was GERD. I went to a GI doctor and told him my symptoms. Main 2 are bloating and belching. He ordered an abdominal ultrasound where I was diagnosed with NAFLD 😂. I don’t think that is the culprit of my symptoms though. I want to be checked for a hiatal hernia; however, I am really afraid of endoscopy. I’ve underwent surgery before but the endoscopy feels different. Are there other accurate ways for hiatal hernia to be diagnosed? I’m 6’1, 18M and I currently weigh 245, down from 260 a week ago. I’ve quit sugar and gone on Mediterranean diet for my liver, but I still have my bloating and belching. If I continue to lose my weight can the hiatal hernia go away or do I need it to be checked?