I was recently tested and have autism spectrum disorder, generalized anxiety disorder with obsessive-compulsive features, and major depressive disorder with psychotic features. My psychiatrist has been suspecting I have bipolar disorder and we are looking at medication adjustments. 

However, I have a strong suspicion that I have ADHD-inattentive type and that my depression has made ADHD symptoms worse. For the past 4 years I have had a steady decline in my schoolwork (used to be a straight A student) and now I can barely focus in class and always wait until the day of to do homework. That’s in addition to several other ADHD symptoms I have recognized (hyper-fixations, talking too much, impulsivity).

Has anyone here been misdiagnosed as bipolar before they were diagnosed with ADHD? How did you know the diagnosis was incorrect?