"Just joined GP, they just don’t want to refer..."

Prior to my pregnancy I was hospitalised due to severe gastritis and inflamed lining of the stomach! - this was whilst at my previous GP. I had become pregnant straight after leaving hospital and been referred to Medefer Gastritis specialist doctors. Since I have moved home and just had a baby, my nearest GP is modern medical, medefer, who I was referred to by my previous GP couldn’t really do a treatment as I was pregnant and only recommended a h.pylori test and reviewed medication. - they had told me to get referral again from new GP after having the baby if symptoms worsen. - I am suffering currently from severe stomach burning non stop and have even been to A&E and seen an after hours GP, I have approached my GP three times now and they just won’t refer me back. They keep changing and prescribing me different dose and medication (PPI drugs) which is making it all worse, I now have loss of appetite, sleepless nights - and has to stop breastfeeding. It’s coming upto 3 months now. I am extremely disappointed! The doctors are lovely, however I am worried about what’s happening inside me.