Possible worsening hiatal hernia?

Hi,

I’m 27 and have hEDS, POTS, GERD etc among other things. I know hernias are common with EDS and that hiatal hernias can often cause GERD so I’ve been aware I could have one for a long while. GPs here don’t think they’re serious most of the time and have focused on treating the symptoms with omeprazole, antacids etc but it’s reached a point where that isn’t working anymore and my symptoms are worsening. I’m not sure if it’s reached a point where a doctor will take it seriously yet, or if there’s even anything that can be done about it - any advice would be appreciated!

I was first diagnosed with GERD aged 20, experiencing chest pain, reflux and stomach churning from excessive acid, which mostly stayed the same for a few years. My throat is also super sensitive and the slightest irritation can make it bleed.
But in the last two years , I’ve developed a chronic sore throat that’s worse in the mornings, voice changes, and it’s painful and difficult taking a deep breath into my diaphragm or singing. I also sometimes experience difficulty swallowing and nausea, and recently even threw up out of the blue with no cause almost like with gastroparesis. When I feel my diaphragm and take a deep breath, I don’t feel the movement which I’ve been told indicates a hernia. I’m not overweight and don’t eat a lot of food - I actually can’t because my throat is so tight sometimes - so it’s not diet or weight related. I also don’t know if this is relevant but I also aspirate drinks quite easily.

I know a sliding hiatal hernia isn’t considered a significant issue in the U.K. but I’m wondering if it’s definitely the sliding kind - I don’t know if you experience all those symptoms getting progressively worse with that?