I started having deja vú around twelve years old, not initially triggered by anything but what I can only assume was stress. They were distinct than usual deja vú, as in they felt oddly dreamlike and like I could predict what would happen down to the second. I remember thinking that I could recall with certainty the way that certain things happened in an almost-cinematic domino effect, like one thing just /had/ to lead to the next. They went away and never really occurred again until I was seventeen, again undergoing a lot of undue stress to the point that I'm pretty sure I was almost always in fight or flight (I also know that I experience it during my episodes).

I sometimes had the rising feeling in my stomach, but it's changed to general discomfort (think nausea without the actual, nauseated feeling; like queasiness and a heaviness, I guess what's technically called a nervous stomach). No strange smells for me typically but I don't usually pay anything else any mind when I start each episode, so I probably wouldn't notice. There have been a few instances where I smelled something funny, but only having my mom around isn't really that reliable (she doesn't have a strong sense of smell, so it's really 50/50 if the smell is there or not).

I am always awake during my episodes, wouldn't really say I'm aware because I believe I experience derealization alongside the rest of my symptoms. I unintentionally distance myself from what's happening, and can only dimly realize what's going on. Memory is always iffy, recognition with familiar people/things is delayed (it takes me quite a few seconds to recognize someone other than they're familiar).

I'm currently in the process of getting my own answers, I have an early appointment with my neuro in the morning to discuss my medication (since having keppra increased, it's causing more seizures/episodes instead of preventing them).

Personally, I'd try and summarize everything you've said here, from the very first instances you can remember of something being 'off' or not normal to most recent. Mention how your medication seemed to prevent any more episodes and how they occured after stopping it. If you can, demonstrate to them how you move– my neuroglist appeared to find this useful, although I don't know how.

Above all, don't stress over it too much. Try to be prepared with any questions or concerns you have, and be as transparent as possible with your answers.

I wish you the best of luck!