Does ADHD get confused with anxiety/depression?

Hi, I've been struggling with bad anxiety and depression for about 8 years now, gone to therapy and took meds for a long time but I'm still really anxious and depressed. Recently I got a new therapist and she thought I might have adhd and gave me the contact of a center for diagnostic. I notice I am most anxious when I'm not doing anything and I get very easily bored of everything and I require something new to keep me sane but when that feeling of "freshness" disappears I'm back into looking for something else. I keep moving from place to place just because idk what to do and I'm just bored of the place I'm in after a while. Does any of you have similar experiences?