I keep having nightmares

I have awful nightmares, at least 2x a week, and they always include some type of sexual assault and/or abuse. Last night’s nightmare: I was kidnapped and forced to “act normal” in an abusive relationship with a man I didn’t know. I escaped and found my boyfriend but omg this dream was horrifying, I woke up drenched in sweat and crying. Other nights I dream I’m being raped. I have NO IDEA why I have these dreams! I’m not in any danger, my boyfriend is absolutely amazing and respectful, In my waking hours I am the happiest I have ever been. I am stressed about school but that’s it!

Does this happen to anyone else? How do I make it stop??

Note: I have never been sexually assaulted, but I have been in an emotionally abusive relationship.