I am new to the Creation Kit, but I feel like I have been getting the hang of it pretty quickly. I am having one
problem in particular that is really troubling me. I have a level built, with roombounds and portals placed correctly,
but it seems NPCs from later on in the dungeon are spawning in as soon as I enter the dungeon and triggering
traps that were intended for the player. I have NOT navmeshed the level yet because it is not entirely finished,
so that's my best guess as to why this might be happening. Any suggestions on how to fix this? Thanks.

did you want them to spawn on trigger?
and have you set the triggers to playeronly

It's most likely a NavMesh issue. After your done, it should work.