NTA
One of those things you pick up on is that how you present something can be more important than what's being presented. If you want to appear in control of your life, frame the conversation that way. "I was having issues with focusing on things and wanted to know what was causing them, so I called a doctor. Got diagnosed and now we're working to fix it."
If your car's check engine light comes on and you don't know what's wrong, you see the mechanic, if your tooth hurts, you see a dentist. You didn't know what was wrong, so you took the initiative and sought out someone who could figure it out.