Nightmares after abusive relationship

I’ve been having vivid nightmares about my last relationship almost every night, or dreams about her in general. I keep getting pulled back to moments where she screamed at me, called me stupid, and ignored me for weeks until I begged just to be acknowledged again. To earn her affection back, I had to endure punishment being bitten hard enough to bruise, being struck, or the time she threw a full water bottle at my face while I was driving and then screamed at me, calling me stupid and cussing me out. I’m in therapy, I’m taking care of myself, eating better, and genuinely trying to heal but the nightmares won’t stop, and I don’t know what else to do anymore. I’m so tired is this normal after an abusive relationship??