Hi Amy,
I had a similar experience. I started getting teeny-tiny frequent yet short seizures in 2019 where I'd have difficulty speaking or understanding what others said and I thought it was from stress. It wasn't until 2 years later when I got my first tonic-clonic seizure, well, three actually not very far in time from each other and during all three I was alone at home.
When the first one hit, I was at my desk working and before I knew it, I woke up on the couch 45 minutes later unable to remember how I got there. I was exhausted and realized my tongue hurt. I knew later that I bit both sides of it. I didn't know what was it that I experienced but I did my best to forget about it. I got the second seizure while asleep and fell off the bed, which woke me up. That also caught my attention yet, again, I didn't proceed to investigate it.
Then, I got the third one, the most savage of them all. I was in the hallway, suddenly I got an aurora and blacked out. I woke up 30 minutes later on the bathroom floor, with severe pain in my head and exhaustion all over my body. Apparently I hit my head against something and there was a little wound slightly bleeding. I could barely walk back to my room which kept spinning all night long. I was terrified.
That was when the shit hit the fan for me. When I told a friend of mine who is a neurologist, she asked me to do an EEG and that's how I knew I have epilepsy. I've been on medication since then, didn't get any such seizures, thank God, yet when I miss my dose, feel stressed, or have problems sleeping, I get cognitive impairment, sudden fear and anxiety and recently I've been experiencing problems with reasoning, memory, and a bit of visual hallucinations.