PTSD after cancer

I recently saw a psychiatrist for an ADHD evaluation and came away instead with a PTSD diagnosis. I'm not sure how I feel about this. The core of my trauma revolves around my diagnosis and treatment for Hodgkin's lymphoma. I've been in remission for years but I'm still avoidant to talk about that time and I have trouble remembering it as well. It seems I have many holes in my memory about other things too, which is why I was assessed for ADHD. I'm a mother of a toddler, a small business owner, and struggling to deal with my past trauma. I guess I'm just hoping to find some other cancer survivors who are dealing with the the same shit, years after treatment.