Can't understand when people talk in "Paragraphs"

What is going on with me? I've had bad adhd my whole life. I've always struggled with attention span and inattentiveness. However, in undergrad, I overcame this by taking notes. I graduated in 2019. I'm 30 now and am struggling with a level of inattentiveness I've never encountered. I have no idea how to describe this other than this: If someone explains something to me in paragraph form, I can't understand or follow everything they are saying. I try so hard to listen to every word and understand them. But I just can't. I can't understand. It's like my brain gives up. It's happened with my doctor and my employer. It's worse when I'm tired from a long day. It recently happened in an interview. They asked me a question, and I had to embarrassingly ask for clarification and rephrasing. What is going on??? do I have a audio processing disorder??? Have I just dumbed down the longer I've been out of school?? I worked as a nanny for years. Could this have contributed?? It's affecting my health ( i go to my doc and can't understand everything I say and just end up nodding). Its affecting my employment abilities. I also have issues with understanding something I'm reading. I use to be an amazing reader in my youth. I wonder if this is related.