Is it possible for nightmares every night to be a symptom of early pregnancy?

See below: How about something more exact, e.g. Over-the counter pregnancy test? If still have questions, contact your primary care doctor? These steps probably will bring you some peace of mind. Also, if you're having nightmares every night, try to write down a theme and see if your dreams have something in common. Practice sleep hygiene, no heavy meals or alcohol before bed.