Vomiting liquids post covid

Anyone else experience daily vomiting post covid? I had Delta variant 8/21 and Omnicron 1/22 and have been vomiting since. I had a virus in 5/22 and have been unable to keep liquids down since. I have been on IV hydration for a year. I have had all the tests done that are available in MT, tried Harborview for 24 stomach emptying but they no longer have the machine? I have referrals to Mayo but my doctor has been unable to connect with doctor for charity case review. Any ideas on how to do this? I have recently been diagnosed with POTS but also have malnutrition/malabsorption and vitamin deficiencies. I need help! Please