I have both.

ADHD meds do help me with concentration, but some of my "bigger" ADHD issues are: (1) pacing, (2) distractibility, and (3) forgetfulness. Meds don't really help with those things for me. (Though, sometimes I do wonder if I have akathisia or RLS that's exacerbating the pacing. I've always been a pacer, but it's definitely gotten worse over time.)

I think you should work with your therapist in identifying which aspects of ADHD she thinks you have so that you can come up with therapy goals or a targeted plan for helping you cope with those symptoms. I mean, medications do help, but like I implied, they don't help with everything. Thus, I think ADHD treatment is part therapy and part medication... although medication is not a "must," as some people can't tolerate the meds and can lead successful lives via coping mechanisms they've learned in therapy.

Feel free to ask me any specific questions you have, though, and I'll try to answer.