I have had this fetish since I was about 12 years old, started with being around my mom belching loudly around the house, to my dads friends and lots of people around me openly letting out big burps. I came to secretly like them. The way they sound, the faces they make and the face of relief, they fascinated me but I shamed myself for a long time until I finally explored youtube and discovered people like mandy, voreacious, amelie and more. Well fast forward to now I was a burp content creator for a while, gained a pretty big following but then out of shame and embarrassment I went back and forth for a bit, deleting and restarting my accounts. I finally deleted them all because I was in fear of people in my personal life finding out, because I can’t hide my faces when I let out burps, it just feels so good, my stuff was getting blasted on porn sites and I just got paranoid. I personally really like watching girls belch loudly and also stuffing themselves full and chugging soda. Burping and bloating on girls is just so attractive to me, I have overconsumed myself secretly with this fetish, making videos for myself to watch of me chugging and burping, stuffing, also watching girls on youtube, I am in a relationship now and he has no idea I have this fetish, I feel so ashamed and misunderstood, I’m not sure what’s wrong with me. I guess i’m just writing this to hopefully be heard by somebody. Just not sure what to do or how to deal with this … Maybe someone to talk to about it i’m not sure. Thanks for listening 
I’m about to inbox ya. I have a fear of people I know personally finding out also lol. We can go into depth about in the DMs though
Almost no one in my personal life knows about my frtish so it can be a struggle. Know that there are otvers like us though, so you are not alone!
I’m sending all my love never be ashamed of yourself just because this fetish isn’t main stream “normal” doesn’t mean anything is wrong with you!!! I really hope you can overcome the bad feeling you have towards your sexual preferences because you’re still super young and spending a lot of time experimenting is completely normal ! If you ever wanna talk about being a content creator and dealing with family or friends my inbox is always open. Sending you my love 
You don’t need to feel ashamed or embarrassed at all! Check your DM 
I’m not sure how helpful this advice will be, but if you ever feel comfortable opening up to a therapist, please consider doing it. I’m also a female in my 20s and felt really similar to you for a long, long time. I am also in a relationship w/ a man and I haven’t told him about mine either. But my therapist knows and it has done wonders for the shame I felt. It was not easy telling her. but it changed my life.
Okay, I can’t exactly advise you on what to do but maybe providing my experience might help. I too grew up with this fetish, it’s literally one of the primary things I looked up when on porn sites, the normal mainstream porn never seems turned me on. It took me a while to come to terms with it but I took a step back and realized it’s really not as bad as people would make seem. There’s literally nothing wrong or really shameful about this fetish really, like it shouldn’t change the perception people have of you. If that happens, you need to do some evaluation on your relationship with them for such a minor issue.
I was ashamed till I came across some really open minded college friends of mine, I told them about my fetish and how I don’t really let people know about it. I was told it’s not really as bad as I think, they’ve heard way worse funny enough. Of course this is not to say this would be everyone’s universal reaction but of course asses your audience or you relay such important (at least to you) information. What’s the worst that would happen especially when you convey to someone you see yourself being long term with. I told my partner she needs to meet me half way with this honestly because it’s one of my primary ways of arousal If she wants me to pleasure her as well. You want to enjoy your intimate life as much as you can and if you feel that’s something you’d like your partner to do for you, I say go for it!
You first just have to start changing that dirty perception of yourself and don’t view it based off societal standards. I want you to view the situation holistically & logically question why you think it’s shameful.
TL;dr: be comfortable and a bit more open with your closest people first, then try approaching your partner with the discussion. It’s not really that bad of a fetish, trust me.