Struggling with Intense Nightmares Lately

Salam alaikum, I’m reaching out for some advice and insight on what’s been happening. I’ve been consistent with my salah, doing dhikr, reading the Qur’an, and trying my best to practice the deen. Before sleeping, I recite Ayatul Kursi and often drift off while doing dhikr. I’m drinking enough water and my sleep routine is mostly okay. But for several nights now, I’ve been having these awful nightmares. Some feel like they’re picking up where the last one ended, or they’re completely new. Last night’s was especially terrible. I also have this persistent tension at the back of my neck that won’t ease up, along with a strong headache that medicine doesn’t help. It could be unrelated, or maybe it’s from the poor sleep because of the dreams. If I’m missing something or there’s any suggestion you have, please let me know. JazakAllah khair.