Rejected by a Rheumatologist: Struggling with Autoimmune Diseases and Disordered Eating

I've been trying to get tested for autoimmune diseases lately, and I was so excited to see a Rheumatologist to test me, but she refused to, saying my symptoms were probably caused by me being fat. She wouldn't listen to me about how I've been struggling with these issues before I gained a lotta weight, but my parents wouldn't take me seriously, but she refused to listen. She said until I lose weight she couldn't help me. It made me crash really bad, I can barely do much of anything because of how bad my pain is, and I've been trying so hard to pull myself out of disordered eating, but it hurts so bad to be treated like this.