Struggling with ADHD Diagnosis and Medical Gaslighting

I was diagnosed with ADHD when I was young. Well my old med dr removed it and said that I'm faking. My new med dr believes me but just to be sure she wants to have an eval done to see what all I have. I was diagnosed with ADHD, ADD, ODD, OCD, Anxiety, Depression, PTSD, and Borderline Personality Disorder. I talk a lot and show all the signs of ADHD but my old med dr said I'm manic and that I need to stop lying for attention. Has anyone else had this issue where there med dr says you are lying for attention