Therapy is traditionally read as a space set aside for honest talk. Dreaming of a session points to things that want to be said out loud, and to the wish to be heard without being judged.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.