How to deal with intense nightmare?

Had a very intense nightmare last night. This one feels different from other dreams/nightmares ive had.

Two weeks ago my therapist told me I may have CPTSD (she doesn’t offer formal diagnoses because she doesn’t want to label people). I’ve been struggling with the news.

Last night, I had a very intense nightmare in which I was trying to tell my mom and aunt I had (possibly) gotten sexually abused as a child, and when I was about to tell my aunt she said I know something happened to you as a child, a man took advantage of you. And I started screaming in my nightmare in terror and when I woke up it was like that emotional scream came from deep within and I was paralysed in fear. I couldn’t go back to sleep after that till the morning, I was really disturbed and hypervigilant all night.

Did this nightmare happen because ive been overthinking things about my CPTSD, or is it like a trauma nightmare or something? What do you even call it? Why is this happening now? And how do you deal with such nightmares? Because now im officially scared of sleeping.