Yes ,
speaking of my own "case" it is possible to have psychotic symptoms and episodes with thought disorder while also being dx with DD.
My first dx was schizophrenia at age 19 in hospital and it took years (is taking years) to sort out the flashbacks and amnesias and so on- from what is delusion and halucination. Both difficulties can be present in one mind according to my psychiatrist.
Becka- did you read my other answer to you as well in the other forum re: your youth because my point is also that the prefrontal cortex is not quite finished maturing and developing until we are in our 20s so you may find some comfort in knowing that you have power over how you perceive of yourself from here - and what you want your brain to become better at.