Can you feel false arousal in a bad dream or when you wake up from a bad dream? I’m so scared

I’m on my period and o think my ocd feels a little worse today… I feel anxious and like something bad is about to happen, like I can’t move or talk cause I’ll freak out or snap and do something. Also I had a gronial response about an SA topic and I feel horrible, I’ve noticed that I do have these gronials as if I’m actually into that but idk if it can happen that you have the gronial and think “oh I’m horny, not about this but I am” is that possible? Idk how to say it… also I think I just want reassurance but I’m also scared…

Does anyone else’s false memory intrusive thoughts of what could have happened feel very, very real?

does it also happen to you that during exposure to erp you can imagine that act and scene in detail, and feel some confused excitement that leaves you stressed because it is hard to believe that it is part of OCD, it seems so real! When i can imagine it in detail and feel it like i can actually get arousel about it.