How to know difference between ADHD and dissociative PTSD

So I’m a 33yo woman and my mental health journey has been a nightmare. I was originally misdiagnosed with OCD around 2 years ago and then was diagnosed with ADHD. I have been on guanfacine, adderall XR and IR, and vyvanse and none of them helped. My psych asked her peers and they suggested my inability to focus, memory issues, executive functioning issues etc could be from trauma.

Now I do have some childhood trauma but I never saw any of it first hand (domestic abuse, drug addiction, parent in jail etc) my bigger issue is that most of my childhood I don’t remember AT ALL.

What am I supposed to do to get help or know what direction to go with my healthcare?