can nightmares be borne from intrusive thoughts? or are they a sign something happened?

ever since i was around 8 or 9 years old ive had intrusive thoughts regarding my family members. as i got a little older i started to have nightmares and stress dreams involving being coerced and being the coercer. these have gotten less frequent but i still have them occasionally and they are disturbing. ive also dealt with a lot of sexual intrusive thoughts in general but ive been able to manage them so im wondering if those were contributing to the stress dreams.

i dont remember a lot of my childhood but i also dont really think anything happened. i think sometimes lack of emotional boundaries made me feel very uncomfortable and like a partner to my parents, but other than that i highly doubt CSA occurred. i dont know why im still getting these dreams though, i really do not like them.

wondering if anyone has any insight, sorry if this isnt a good place to post this