I feel like I’m slowly dying and nobody is helping

I’m at a complete loss. I feel like this is my one last ditch effort at reaching out for support. I only had Covid once back in the summer of ‘22. I was very ill for over 6 weeks and it affected my heart for about a month afterwards with pericarditis and tachycardia. I thought I made a full recovery because I was completely symptom free for over a YEAR. This past August I moved and a week afterwards I became ill again, (no covid but a myriad of other new symptoms including the return of heart issues). Since then I have progressively gotten worse. I’ve had every test done under the sun including an endoscopy, colonoscopy, MRI of my brain, countless EKG’s, tons and tons of bloodwork…I could write three paragraphs on all of the doctors and tests and debilitating symptoms. I was diagnosed with POTS in October. I have lost over 50 pounds and cannot seem to gain weight and I am continuing to lose weight. Nobody has answers except to take a beta blocker which lowers my already too low blood pressure and makes me feel even worse. I’ve been to the ER almost 10 times. I feel like everyone thinks this is psychological and they continue to gaslight me. Why are there zero resources for people dealing with this? I’ve been unable to work now for over 6 months. I’m living alone and it’s becoming hard for me to even care for myself. Where is the help? Why have we been forgotten? I have become suicidal every day because of how ill I am without any support. There is only ONE Post Covid Rehabilitation Clinic here in the entire state of Washington and I’m not scheduled to see someone until June! My heart feels like it’s failing and getting worse by the day. I don’t think I’ll be alive by June. Can anyone help me? I’ve joined the Dysautonomia International group but everyone in there has at least someone who is supporting them. My family has been awful, making it out to be severe depression or that I’m exaggerating to get attention since all of the tests come back negative. They tell me to drink more water, eat more salt and exercise. I went to the gym every day following the POTS protocol back in November and now my heart is much much worse. Someone please help me.